firefox set default browser

[ButtonMaker]

i found a document to set firefox as default browser... what i want to know is how can i turn back to ie default from the registry ?

Windows Registry 
      Editor Version 
      5.00[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\HTTP\DefaultIcon]@="C:\\PROGRA~1\\MOZILL~1\\FIREFOX.EXE,1"[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\HTTP\shell\open\ddeexec]@="\"%1\",,0,0,,,,"[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\HTTP\shell\open\ddeexec\Application]@="Firefox"[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\HTTP\shell\open\command]@="C:\\PROGRA~1\\MOZILL~1\\FIREFOX.EXE 
      -url \"%1\" 
      -requestPending"[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\.html]@="FirefoxHTML"[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\.htm]@="FirefoxHTML"[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\https\DefaultIcon]@="C:\\PROGRA~1\\MOZILL~1\\FIREFOX.EXE,1"[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\https\shell\open\ddeexec]@="\"%1\",,0,0,,,,"[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\https\shell\open\ddeexec\Application]@="Firefox"[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\https\shell\open\command]@="C:\\PROGRA~1\\MOZILL~1\\FIREFOX.EXE 
      -url \"%1\" 
      -requestPending"[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\.xht]@="FirefoxHTML"[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\gopher\DefaultIcon]@="C:\\PROGRA~1\\MOZILL~1\\FIREFOX.EXE,1"[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\gopher\shell\open\ddeexec]@="\"%1\",,0,0,,,,"[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\gopher\shell\open\ddeexec\Application]@="Firefox"[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\gopher\shell\open\command]@="C:\\PROGRA~1\\MOZILL~1\\FIREFOX.EXE 
      -url \"%1\" 
      -requestPending"[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\ftp\DefaultIcon]@="C:\\PROGRA~1\\MOZILL~1\\FIREFOX.EXE,1"[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\ftp\shell\open\ddeexec]@="\"%1\",,0,0,,,,"[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\ftp\shell\open\ddeexec\Application]@="Firefox"[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\ftp\shell\open\command]@="C:\\PROGRA~1\\MOZILL~1\\FIREFOX.EXE 
      -url \"%1\" 
      -requestPending"[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\.shtml]@="FirefoxHTML"[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\.xhtml]@="FirefoxHTML"[HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet]@="FIREFOX.EXE"[HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\FIREFOX.EXE\DefaultIcon]@="C:\\PROGRA~1\\MOZILL~1\\FIREFOX.EXE,0"[HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\FIREFOX.EXE\shell\safemode]@="Firefox 
      &Safemode"[HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\FIREFOX.EXE\shell\safemode\command]@="C:\\PROGRA~1\\MOZILL~1\\FIREFOX.EXE 
      -safe-mode"[HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\FIREFOX.EXE\shell\open\command]@="C:\\PROGRA~1\\MOZILL~1\\FIREFOX.EXE"[HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\FIREFOX.EXE\shell\properties]@="Firefox 
      &Options"[HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\FIREFOX.EXE\shell\properties\command]@="C:\\PROGRA~1\\MOZILL~1\\FIREFOX.EXE 
      -preferences"

[jackdaniels]

I think you should backup your registry keys so you can restore anytime... well some may have a better idea though