Why can't I access remote service in windows 7 ultimate?

I have a blackyberry Q5 which I use in connecting to the internet for my laptop via the wi-fi-802-11- wifi hotspot and I want to use remote software using a dynamic DNS which I registered with no-ip.com and I have tried other services too but I can't connect to the remote software with my computer. I so understand the domain names are registered with my external IP, I guess i'm having this problem because I can't connect to my external IP which I tested by pinging my external IP xxx.xxx.xxx.xxx! please any Idea?
You can give your other reviews too or any other related problem that could cause this.

Here is my configuration detail:
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
C:\Windows\system32>ipconfig /all
Windows IP Configuration
Host Name . . . . . . . . . . . . : user-PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : Yes
WINS Proxy Enabled. . . . . . . . : No
Ethernet adapter Local Area Connection 8:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : TAP-Windows Adapter V9
Physical Address. . . . . . . . . : 00-FF-9A-BF-11-C6
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Tunnel adapter Local Area Connection 6:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : BlackBerry Virtual Private Network
Physical Address. . . . . . . . . : 02-B0-A3-11-86-01
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : fd0c:7f79:a25d:dee8:7490:71a5:a1b5:ce4c(P
referred)
Link-local IPv6 Address . . . . . : fe80::94cb:7f2c:10cb:4648%21(Preferred)
Autoconfiguration IPv4 Address. . : 169.254.70.72(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . :
DHCPv6 IAID . . . . . . . . . . . : 520261726
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-19-B7-34-E9-00-23-5A-F2-5C-88
NetBIOS over Tcpip. . . . . . . . : Enabled
Wireless LAN adapter Wireless Network Connection 3:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Virtual WiFi Miniport Adapter
Physical Address. . . . . . . . . : C0-CB-38-12-08-E4
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Wireless LAN adapter Wireless Network Connection 2:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Broadcom 802.11g Network Adapter
Physical Address. . . . . . . . . : C0-CB-38-12-08-E4
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 192.168.0.2(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.0.1
DNS Servers . . . . . . . . . . . : 8.8.8.8
8.8.4.4
NetBIOS over Tcpip. . . . . . . . : Enabled
Ethernet adapter Local Area Connection 2:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek RTL8102E/RTL8103E Family PCI-E Fa
st Ethernet NIC (NDIS 6.20)
Physical Address. . . . . . . . . : 64-31-50-55-1C-56
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Tunnel adapter Local Area Connection* 22:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2001:0:9d38:90d7:815:3297:3f57:fffd(Prefe
rred)
Link-local IPv6 Address . . . . . : fe80::815:3297:3f57:fffd%36(Preferred)
Default Gateway . . . . . . . . . :
NetBIOS over Tcpip. . . . . . . . : Disabled
Tunnel adapter isatap.{92CC2BC5-7169-4D64-A045-F3B6DDE50796}:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter #2
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Tunnel adapter isatap.{CBEF411C-D99C-4138-9DFE-7F3DCE33BC51}:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
C:\Windows\system32>
This was the ping result of my public IP and domain name which I want to use with the remote software.
==============================================================================
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
C:\Windows\system32>ping 41.XXX.XXX.XXX
Pinging 41.XXX.XXX.XXX with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Ping statistics for 41.XXX.XXX.XXX:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
=============================================================================
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
C:\Users\user>ping chlteam.redirectme.net
Pinging chlteam.redirectme.net [41.XXX.XXX.XXX] with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Ping statistics for 41.XXX.XXX.XXX:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
C:\Users\user>

I've tried this solutions:
1) I check my External IP address using whoer.net
2) I checked if my ISP is not blocking the port i'm listening to from the Remote client software. which I confirmed not blocked.
Still I can't connect to the server but I discovered something after several workout to see it working!
1- I discovered I can ping any other domain address like google and yahoo but I can't ping
- my External IP address
- the remote DNS address which I setup with (no-ip.com)
I've tried:
- flushing my dns and may more but still not working
- I've also modified the host file
My External IP Ranges from 4X.X.X.XX6 to 4X.X.X.XX9 so I modified the host ping to all ranges incase if external IP is changed by the ISP.
# Copyright (c) 1993-2009 Microsoft Corp.
#
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
#
# This file contains the mappings of IP addresses to host names. Each
# entry should be kept on an individual line. The IP address should
# be placed in the first column followed by the corresponding host name.
# The IP address and the host name should be separated by at least one
# space.
#
# Additionally, comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a '#' symbol.
#
# For example:
#
# 102.54.94.97 rhino.acme.com # source server
# 38.25.63.10 x.acme.com # x client host
4X.X.X.XX6 chlteam.redirectme.net
4X.X.X.XX7 chlteam.redirectme.net
4X.X.X.XX8 chlteam.redirectme.net
4X.X.X.XX9 chlteam.redirectme.net

# localhost name resolution is handled within DNS itself.
# 127.0.0.1 localhost
# ::1 localhost
Conclusion:
- I can't connect to the remote server because my computer can't ping/connect to my external and remote dns address!
I'll be happy if I can get an absolute solution to this problem i've been facing for weeks despite all my effort but no good outcome