The thread for Xbox live gamer tags
You may also want to stick your nzgames forum name into the motto section of the gamerprofile so that people know who you are when adding them.
I'll be merging all posted names into the top post. Mygamercard.net profiles are being used so people can see who's got what games. Thought that might be of interest too.
Go to
MyGamerCard.Net and follow the bouncing ball from there. It'll generate the bbcode for you to cut and paste.
/edit: I've done away with the image sigs, was taking to long to load the thread.
and thanks to xpandnz for this info below
You can also add people online here
http://live.xbox.com/en-NZ/profile/Friends.aspx
much easier then having to use the controller or Messenger Kit