beauty hi
I recently did the same with my pc. first went the power supply pffff. so i bought a new one, more wattage too, with XP pro.
then, I got crazy and bought a new 19" monitor, 512mb ddr RAM, creative labs 5.1 sound card, Panda antivirus (very seamless and a low resource user), new 56k modem, canon fax/printer/copier/scanner and thats about it for now
Its rockin!
boa