nvm just got it to work. if anyone is having the same problem go to this
E:\Drivers\VIARAID\6420RAID\DriverDisk and find makedisk. Make a disk and when you hit f6 in your setup use that disk and windows xp will install. The asus manuel tells you to use the promise drivers but your really supposed to use the via.
INTEL CORE 2 DUO E6420
ASUS P5N-E SLI nVIDIA nFORCE 650 SLI
CRUCIAL BALLISTIX 2GB 667MHZ 3-3-3-12
RADEON X1950 PRO