was wondering if there was a way to install xp 64 with 4x250 sata hd's in raid 0 witch is about 931gigs? i am using vista 64 now but i am kinda sick of it.

Hello you can setup RAID during the XP install.

F6.

the raid is already set up. it doesnt work with a certain size hard drive in xp cant recognize it. it goes threw the steps on putting in the drivers for it but after that it stops and says it cant recognize the what hard rive i have mainly because its too big from what i have read. so i was woundering if there was a way to get it to install with a large hard drive

I've installed XP on my 1Tb HD just fine, sounds like it's just the RAID then that's confusing XP

ok then it is possible to install xp 64 with a large hard drive wasnt sure about it heard issues about it. hmmm then i guess what do about my raid? it works fine with vista 64

I would stick with Vista honestly, unless you really can't stand it. Windows 7 will be out soon as well, or you can try the Beta/RC of it and then you can upgrade from those to retail when it's ready.