I just got this crappy new computer and it barely plays source. pulling 8-15 fps max with 50ish choke at any given time. On top of that, it's giving me problems loading my Razer Copperhead mouse to, can't figure out how to load the drivers on it. TEcfg MCF application error is what I keep getting. Over all I need some help. Computer has:

AMD Athlon 64X2 Dual-Core processor 5600+
3072MB PC2-5300 DDR2 SDRAM
500GB 7200RPM serial ATA hard drive
Nvidia 6150Se graphics

Helpsies is needed. and Vista ftl.

install windows xp, the computer isn't the problem.