Unfortunate about the UBCD, but MSFN has to protect its interests, so I understand. I downloaded it a couple of months ago, just in case, but haven't had a need to try it (or the time to delve into it). I wasn't aware its scope was so broad, actually. Anyway, let's ignore any bundled applications for the moment. I rediscovered the A-P thread recently, and did read a moderate portion of that tome, I think I recall some discussions about improving compatibility with the Unofficial Service packs, and had thought this had been achieved. Am I wrong in thinking that about the A-P compatibility, or is it that the same level of compatibility was not achieved with the updates in the UBCD? Do you know to what extent the UBCD can be applied without introducing compatibility problems with either 98SE-SP-xxx or WUPG98? And KernelEx? No! Problem has not solved but no one interested to solve this problem so i am loosing any hope. by the way thanks to all. We're trying to figure it out. Joe. My hopes are growing now.