I have Windows XP, and I downloaded a program to convert WMA files to MP3 files. My anti-virus program (Symantec) detected a virus in the program. I uninstalled the program and did a virus scan to see if there was any leftovers. There was nothing detected. But about ten minutes later, I clicked on Microsoft Publisher on the start menu. Nothing happened. I right-clicked and clicked "open" and this came up: "Windows can not verify the installer. The computer might be in safe mode..." I did not have safe mode on, and I saw that none of the start menu programs were uninstalled. I could open the programs from everywhere else, just not the start menu. Any advice?