No need to buy any IDE cables, they come with the motherboard. Definately go with STE's power supply, its a lot better than the one you have. Try to get a different brand video card, XFX has a relatively high rate of bad cards. Go with an evga or something. Sli/crossfire is a waste of money, so just drop that, and you would need an sli board to use two nvidia cards anyway. Get a regular lanparty ultra-d, and use the money you save to get an evga 7800gt. 7800gt's are only about $300 right now. Great deal. I love mine, it can play F.E.A.R. and BF2 on highest settings flawlessly.