if i were you i would seriously consider a new pc you obviously could use more power than that old system,i just made you one on newegg for $836 with a i7-920 and asus p6t mobo,6 gigs of triple channel 1600 ramfor another $150 you can make it 12 gigs, 1 terabyte hdd,a case and power supply,and video card.you said you wanted to use your old ide dvd drives so i picked a mobo that would let you or you can upgraide them both for $60 more.if you like i can email you the shopping cart, pm me your email and ill send it.i tryed to figure out a way to post it here but i couldn't.i also posted it on newegg in the public wishlists under the name "for techiemon"