First connect your Samsung Galaxy Phone to your PC and after that do not select "File Transfer Mode".
On Your Phone, Go to Menu > Setting > Wireless and network > Mobile network and Check "Use Packet Data"
Now, Go to Menu > Setting > Wireless and Network > Tethering and portable Hotspot and Check "USB Tethering"
Install Samsung KIES on your system, which is an official PC suite for Samsung Smartphone and can be downloaded from Samsung Site
Next, on your computer, Go to Control Panel > Network and Internet Connections > Network Connections and now you will see Samsung Modem there.
Now finally, you can connect the Internet and start browsing using your Samsung galaxy Smartphone as modem and use the internet endlessly. Make sure you have enough data available on your smart phone to make it available for your computer internet. for more info.: Deleted by moderator