Had to replace my crashed C drive and reload XP, added another SATA drive to backup (I'm NOT going to lose anything again!), and somehow lost my BIOS, I think while fiddling with the SATA settings in 1 or 2 places in SETUP cuz of some info with the 250g SATA drive I put in for backup. Next time, I VOW to review the User Manual for BIOS settings! (During boot, it says BIOS not installed) Have downloaded the BIOS off the ASUS site, and am ready to reinstall it, going to use ASUS EZFlash to avoid having to mess with DOS. Going thru my User Manual for setup, I don't understand a couple of the settings: ASUS P4C800-E Del board with hyper-threading, P4 2.8. 1GB RAM, XP. IDE WD Caviar SE C drive & NEC IDE CD/DVD, 2 SATA drives, no RAID setup. In IDE Device Setup, should I enable or disable 32 Bit Data Transfer? What does this do or not do? in Chipset, in Graphic Adapter Priority (described as "setting graphics controller to use as primary boot device") should I set AGP/PCI or PCI/AGP? I have an AGP 8X graphics card. Again, what's the significance or result? In Onboard LAN Controller, should I enable or disable? And if I enable that, I have the option of enable or disable Onboard LAN Boot ROM which is described as "option ROM in onboard LAN controller" - ??? My LAN connection is on the board, not on a card. In PnP O/S, NO = BIOS config all devices in the system, YES = BIOS only config's non-boot devices when a PnP system is installed (i.e. XP). Which, why?? Last, should I enable or disable "Boot to OS/2" for OS/2 compatability? I don't think I have any OS/2 devices, other than mouse and keyboard. Thanks for helping me fine tune my setup so it works properly!!