I'm upgrading to Windows 2000 from first edition Windows98. Again and again I get an 'Illegal operation (?) error message near the end of the 'checking out the files' part of the pre-install activity. Includes something about WINNT32, blah, blah, etc. and ...KERNEL32 ... etc. And the words (if I remember) stack error at the end. Tried to upgrade Windows 98 to 2nd edition, but couldn't even do that. Same illegal operation message. I had Roxio's GoBack 3.1 program on the C drive but uninstalled it (also uninstalled QuickBooks) before retrying the install of Windows 2000. I would like to avoid formating my C drive and reinstalling my programs because there are so many of them and I did that a few months ago. Any ideas? Thanks.