Windows: Remove "Scan with Microsoft Security Essentials..." from right click menus

Normally, Microsoft programs are... ok. Most programs that add an annoying little menu also provide an option to remove it.
Unfortunately, I've found no option to remove the stupid "Scan with Microsoft Security Essentials" menu item. So, onwards with cutting it out manually!

The GUID responsible for this is "{0365FE2C-F183-4091-AC82-BFC39FB75C49}". Remove all instances of it.
Luckily, I've created an easy command you can use.
Open up a command prompt with administrator access and paste:

cmd /c reg DELETE HKCR\Directory\shellex\ContextMenuHandlers\MSSE /f && reg DELETE HKCR\*\shellex\ContextMenuHandlers\MSSE /f && reg DELETE HKCR\Drive\shellex\ContextMenuHandlers\MSSE /f

Viola! It should apply immediately without having to restart.
*update 08/02/2011*
It seems that Microsoft has changed the way that its saved in the registry.

As of the v2.0.657.0 update, the previous command will no longer work.

The new GUID is:

{09A47860-11B0-4DA5-AFA5-26D86198A780}

And the new command to remove them are:

cmd /c reg DELETE HKCR\*\shellex\ContextMenuHandlers\EPP /f && reg DELETE HKCR\Directory\shellex\ContextMenuHandlers\EPP /f && reg DELETE HKCR\Drive\shellex\ContextMenuHandlers\EPP /f

Just as before, there is no need to reboot after running it.