I boot into the single user mode in terminal so that I can do some editing. I edited System/CoreService/Setup Assistant.app/Contents/Info.plist
removed these two lines
and after that, I didn't get that error. I didn't use usb keyboard. However, I did include VoodooPS2 driver in my Extra folder. anyway, that was long time ago but thanks for reply.
The plist was blank. So I copied a code from someone else's plist and also included the voodoops2.kext in s/l/e. But I still got the error. I boot using rboot, so I dont have the extra folder yet. Any other suggestions?