2 other things to add here
My computer is HP-MC m8226x and have MCP61PM-HM(Nettle2) motherboard.
with AMD Athlon Dual Core Processor , Socket AM2, 2000MT/s (2.0 GT/s)
The ASUS M2N68-AM supports this chip But this straight from ASUS
But the equivalent replacement MO is ASUS M2N68-LA which is for Hp
What i bought is AM ?will that be big deal?