Please help, at wits end Precision 380 w/ Adaptec 39320A-r

I have a Precision 380 with an Adaptec 39320A Scsi card with 2 st336754lw Seagate drives.  I am trying to get XP on one of the drives without much luck.  I have done my research, I am aware of the 4 options in my bios (Ahci Raid, Ahci ata, Raid, and Combo), I am familar with F6 installation, I have tried my XPSP0 disc, I have slipstreamed SP2 into another disc, SP3 into a disc, and SP2 and 3 into a disc, I have tried both the Adaptec controller's from Dell's site, and the most current from Adaptec's, I have tried the intel Ich7 controller inf's, I have tried the intel controller rapid storage infs.  All I ever get is either a "Setup could not find any hard discs," NTDLR, or PCI.sys errors.  The farthest I've gotten it to go is to load xp to the point of first restart (where the next would be for it to boot to win and start config), but then it gave me NTDLR.  I have run diagnostics on my SCSI drives, I formatted them, I ran cabling checks on them, I updated the firmware on them, I reset my CMOS, the only thing I haven't tried is computer through window, but that is next.  Please help so I don't go back to being an HP guy for life.

Ultimately I am trying to run my system in non raid, 1 scsi for xp, 1 scsi for Win7, and the onboard sata for storage (one an esata to external removable hard drive).  I have yet to get a working OS on the SCSI board.

I have made sure the scsi's have unique ids, are terminated, the last hdd gives power to termination (separate lvd). I am running 4 sticks of ram for a total of 1 gig ECC ram. Proc is a single core P4 with hyperthreading.  I know that it is just a right combination of bios setting, the right controller driver, and the right os disc, it is just the possible combinations of all of those factors range in the thousands and I have already tried most of them.  I have mostly tried Bios to Combination, with the various driver sets and os disc combinations, but have also tried each option with some other option.  Like I said, next option is Dell computer through window. Please help.