Hi, Buy a Promise Ultra ATA 100 Controller for $45.00. You HAVE TO buy this. Onboard IDE controllers perform really bad. As Justin suggested, Put your Digi001 in PCI Slot 4 (4th from AGP) and hard set it to IRQ9 from BIOS. Put your Promise Controller in to PCI Slot 3 and Hardset it to IRQ5 from BIOS. Disable onboard IDE Controllers. Disable USB if you do not have any USB device. Set Plug and Play BIOS to "YES" in BIOS. Your system should work very very well this way. Mine does. Good Luck and stay Cool 