IBM's Global Roaming allows StarNet subscribers to access StarNet from outside Tucson (even outside the United States) without having to dial long-distance to Tucson. IBM has almost 600 access numbers in the US and Canada; as well as almost 1,100 world-wide.
General Windows NT and Unix instructions can be found at http://www.cahelpdesk.advantis.com/nethelp/#f.
Note: If you are going to be using Global Roaming from out side the US & Canada, there's some additional information you will need to know.