I think you are right regarding the IDE bus speed being 33mhz. I tried a drive compatable with 66mhz but it didn't seem to make any difference in performance. Maybe this could be changed in the bios at some point.
I had some problems with the win2k set up hanging, but I found that if you hit f5 then f6 when prompted to load scsi drivers it loads without a hitch. First choose "standard pc" from the f5 screen and then hit enter at the f6 screen. I never had to hit f7 to diable acpi, it seemded to disable automatically. I was able to re-enable acpi within win2k and it works fine.
Thus far I'm very pleased with the improved performance.
what is the ctl-alt-del key combination with the gateway keyboard? I haven't been able to get anything to work. I plugged in a standard USB keyoboard and it works in a normal fashion