Vista - Renaming Things in the Network Map

OK, I have looked for a bit now, and I just can't seem to figure out how to rename certain devices in my network map.

For instance, my Media Extender is named "unknown" and my switch is called "switch"...

Obviously my Computers are the PC names, and that part is fine...

This is a mere personal preference issue I realize, but I will be adding another swtch to my network soon, and another wireless access point this week, so I'd like to be able to easily distinguish all the devices...

My computers all run vista, so I'm not having the XP thing going on... everything is there.... I just want to rename.

I am sure I can rename these, but it just isn't coming to me on how to do it? Any ideas... I'm sure I'mm looking too deeply into this, its probably way too easy, so hopefully someone makes me feel stupid....

Thanks for reading