Best gamers budget PC

I already have my CD/DVD RW (fairly new), I also may keep the Vid card Radion 4850 HD (would love to upgrade), I also may retain my two middleaged Hard drives and a not so old external backup.

But the rest needs to = a sweet budget gamers rig, On the HOPEFUL side perhaps around $500 USD (but Im married) so it could be a good deal less ( T.T ).

Help me Obi-wan Tomshardware forums you're my only hope (Drama is ALWAYS free)!!


P.S. The power supply of the old (six or seven years) rig was fried (all else was lost and smelly)...