Anyway, Joey. A good mobo and CPU won't cost you that much. Good Asus, Abit, etc. mobos only cost about $100 US, and a 1.0 Gig Athlon (boxed, even) should be about $150 US.
Aww, heck, even a new GFX card wouldn't hurt. The G2 GTS's are down to like $160 US, now.