RAID0 with 2 scsi and 2 sata

HARDWA

P4P800 Deluxe mobo
1 Fujitsu 18GB SCSI Drive - OS
1 Quantum 68GB SCSI Drive - Linux/Storage
2 Western Digital 120GB SATA Drive - Storage
BIOS 1016

here's the situation, i was able to setup raid0 on the 2 wd sata
drives and winxp on the fujitsu. but since i have Serial ATA BOOTROM
set to enabled in the bios (which was the only way i could install the
os), i am not able to install all the os files on the fujitsu. some
files are on the first partition of the raid0 volume (like boot.ini,
the wutemp folder and some other files i can't remember) and booting
up takes way longer than usual.

i know i'm being picky but is there anyway that i can setup my system
to have all os information on the fujitsu? or does booting take a
little longer with raid0. any suggestion would be wikked.

thanks