Bulla installs a file called IEPlugin.dll into your System directory. Before you can delete it you must deregister it. Enter the following command in a command (DOS) window, for Windows 95/98/Me: "%WinDir%\SYSTEM\regsvr32.exe" /u "%WinDir%\System\IEPlugin.dll" Or, for Windows NT/2000/XP: regsvr32 /u "%WinDir%\System32\IEPlugin.dll" Then restart the computer and open the System(32) directory in the Windows folder. Delete the IEPlugin.dll file. You can also delete the key HKEY_LOCAL_MACHINE\Software\IEPlugin from the registry (run'regedit') to clean up if you wish.