Because my QQ got infected, I uninstalled QQ. But when I looked under C:\PROGRAM FILE\TENCENT there were still several files left. Their extensions were DLL and EXE. My system is XP, so I formatted a floppy disk as a boot disk, rebooted, set BIOS to boot from FLLOY, entered DOS, and then used c:\...\tencent del *.* , but they still couldn't be deleted. In the end it was best to go into XP Safe Mode and delete them there. I don't know why they couldn't be deleted under DOS?





