Have a p4b533e (newest bios), set to boot of scsi/onboard ata, as first with primary ide drive as second cd as third and floppy as 4th, have the LSI 1520 sata card connected to a WD200JD, though I am running WD's drivers, for card with same chipset as lsi's just wont work. I was able to install XP using (f6 and the wd drivers) but I cant get my computer to boot off of it, even if I unplug the ide drives (during install and after) it still cant find the sata to boot. Any suggestions would be appreciated, because if I can?t fix it tomorrow I am returning the card (fact that I need to use other companies drivers is enough to warrant that) and buying a promise sata card, not sure what to do if that also doesn?t work.