Hi. I offered to take a look at a friend's computer that recently stopped booting up. It would go to MS-DOS and say that WIN.COM was corrupt. (This is windows 98.) I ran scanreg, and that got windows to boot. Then it complained that explorer.exe was missing, and I restored both that and rundll32.exe (which was also missing). Now, it seems that Norton 2005 was unable to stop the virus because the virus has deleted all the dlls Norton uses, and Norton lists them in error messages at startup. Does anyone know what this might be caused by, and what to do about it? Thanks.