If you ever need to add a user to a local group on your Windows PC here is a way to do it.

Open and Administrator Commnd Prompt

Type net localgroup <groupname> <username> /ADD

Example -

NET LOCALGROUP administrators sethspearman /ADD

Hope this helps someone.

I just used this to add a user as a local admin on a Windows XP since I could not figure out a way to run the Local User and Groups applet using Run As.

Seth