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.