Getting "Runas" back into your life

When testing different uses scenarios on AX, I usually use "Run as..." to open a client as another user. That option is removed from a lot of programs in Windows 2008 (and Vista) and typically won't work on AX configuration files (axc).

I (or actually Google) found this tip on "Norm's PerformancePoint Server blog", on how to get RunAs back:
http://blogs.msdn.com/normbi/archive/2008/04/26/adding-runas-back-into-vista-and-windows-2008.aspx