I have a recent Dell Dimension PC that came with XP home, but I needed to run Win98. It was a pain to install drivers for, but I eventually succeded and it has run fine for 18 months or so. I subsequently learned that installing Win98 with APCI blocked would have solved all my problems. and I actually did that to other PC's. Now the original (without ACPI suppressed), needs a new video card and the whole ACPI conflict pops up again to completely prevent the card's drivers working. As I already have another PC with the desired installation (one with ACPI disabled, ok?) I think it would work fine if I exported HKLM/hardware from the working PC and imported into the non-working one. My question is, how can I do this ? I fear just deleting HKLM/hardware will leave me with a locked-up PC and will be unable to import the correct version - can I do registry manipulation like this from DOS? Or any other approaches possible ? Last thing I want to do is a full reinstall - it should be a five-minute job !