I bought this computer from a friend and he gave me the 22' monitor with it, very good deal. The CPU is bad and needs to be replaced, he pulled it out and bent most of the pins trying to put it back in and even broke a few ( dumbass ). Here are the specs.

HP a6030n

Motherboard MCP61PM-HM

My question is the motherboard states:
CPU/Processor

* Socket: AM2
* Supports the following processors:
o Athlon 64 X2 with Dual Core technology up to 4800+ (up to 65 Watt TDP)
o Athlon 64 up to 3800+
o Sempron - All
So can I use something like AMD Athlon 64 X2 5200 Brisbane 2.7GHz 2 x 512KB L2 Cache Socket AM2 65W Dual-Core Processor

Also besides video card and memory what else is there I could use to make this able to handle 4 boxing?

Any suggestions on video card would be helpful