Changing workgroups

Ran a search and didn't find anything so if this is a repeat i apologize.

We have a laptop that needs to alter betwenn two seperate workgroups. It has a seperate profile for each. Is there a way to change set different workgroups for different profiles or another way to switch other than changing and rebooting?

What OS are you running??

Symantec Mobile Essential (Basic) is a free Program that does this and more...

Thanks for the replies. It is running ME.