I just upgraded my WinXP machine. She's a 2.4Ghz HyperThread Enabled Pentium IV with 1 Gb RAM. I have about 230 Gb that spans across two disks (one 160 Gb and one 75 Gb). I had to get a RAID controller. All of the other hardware is the same. It took me about three freaking days to get it all working. It was a bitch. The last day was the worst. It wouldn't POST and there was no video. I must have taken apart everything and put it back together about 10 or 15 times. Finally I took it all out - including the motherboard. There was a dust bunny beneath it. Maybe it was shorting the board. I dunno... the no video problem was pretty intermittent. Anyway... it's all working now. I just have to back up my old stuff... it's kinda late now though... I'll do it tomorrow... I need some SLEEP now.