The software can be found in the System folder. On Windows 95/98/Me this is the folder called 'System' in the Windows folder; on Windows NT, 2000 and XP it is called 'System32'. Look for one of the filenames listed above. Before you can delete the program file, you must deregister it. Open a DOS command prompt window (under Accessories in the Programs menu from 'Start') and enter the commands: cd "%WinDir%\System" regsvr32 /u favorite.dll Change the filename 'favorite.dll' to match the variant you have. This can be ofrg.dll, favorite.dll, lwz.dll, F1.dll, ZZ.dll, mpz300.dll, trk.dll, Gr02.dll, Aess.dll, Ss32.dll or emesx.dll; in in the case of the IMZ variant it will have a random eleven-letter filename. (eg. troallystbr.dll). You can usually find the culprit by opening the System folder choosing View->Arrange icons by->Modified, then looking near the bottom of the window. After doing this and restarting the computer you can delete the file. You can also delete the data file favboot.dll, FavMan.dll, SysLdr.dll, mbr32.dll, im64.dll or dlh0st.dll in the same folder (it isn't a DLL at all), and the settings in the registry in the entries 'Counter', 'Server' and 'Object', hiding in HKEY CURRENT USER\Software\Microsoft\Windows.