Motherboard replacement

I am looking for an HP Compaq Asus Motherboard M2N68-LA NARRA3 5189-1661. I have looked around and they were all sold out. Does anyone have an idea where I could find this besides ebay? I would like to buy it at a legit store or is it okay to use a different motherboard?

What are my options if I can't get the same exact board replacement? As far as using other motherboards. Hp told me I couldn't use the same recovery disks if using different motherboard but the pc should work anyways right?

My specs are below so if someone could recommend a motherboard from tigerdirect that would fit it would be great thanks(pc is factory built so not sure if that means i must use only theirs.
Hardware
Base processor
Phenom-9500 (A) 2.2 GHz (95W)

2000 MT/s (mega transfers/second)Socket AM2

Chipset
GeForce 6150SE nForce 430
Motherboard

Manufacturer: AsusMotherboard Name: M2N68-LAHP/Compaq motherboard name: Narra3-GL8E

Memory
Component Attributes
Memory Installed 3 GB
Maximum allowed 8 GB (4 x 2 GB) (64-bit OS)

4 GB* (4 x 1 GB) (32-bit OS)

*Actual available memory may be less
Speed supported PC2-5300 MB/sec
Type 240 pin, DDR2 SDRAM
Hard drive

640 GB (2 x 320) SATA 3G (3.0 Gb/sec)7200 rpm