Vista - Changing Workgroups

Hi all, just installed vista last night all seems well except for networking one machine on vista (Andys PC) and one on win xp (Kyle) couldn't see the xp machine at first so followed instructions on this site including turning off the firewall now i can see the xp machine on vista but can't see vista machine on xp so i thought that if i changed the vista machine workgroup to mshome it would work but i can't seem to do it any ideas? cheers please see pick below might help with what i'm on about lol

You mean you cannot find the way to change the workgroup?
You must use "Andy's" computer in order to do that.
Rather than write out the whole thing (With my usual typo's) go here. It is very explicit.
Microsoft Vista Home Networking Setup and Options

Oh just the ticket , many thanks uhaligani got it sorted now (i hope lol)

if you aint got it yet then:
Hold WinKey and press Pausebreak then:

Thanks for the simple version mr_pwnage got it sorted