Remove WPF plugin from FireFox

MS released another .NET extension into Firefox. Mozilla is fighting back and disabling the extension.
http://www.ghacks.net/2009/10/17/mic...n-for-firefox/
Your Firefox may have blocked it already, but here's how to remove it.
* Make sure Firefox is closed
* Del "C:\WINDOWS\Microsoft.NET\Framework\v3.5\Windows Presentation Foundation\DotNetAssistantExtension\*"
* Run regedit and go to “HKEY_LOCAL_MACHINE\SOFTWARE\MozillaPlugins"
* Delete the microsoft.com/WPF,version=3.5 folder