If you set up a dial-up connection in Vista and connect, it will bring up a terminal.
I have also used this: HyperTerminal Private Edition
http://www.hilgraeve.com/htpe/index.html
Edit: Didn't realize that the new version is no longer free for personal use.
I used 6.3, you can get it here.
http://www.sofotex.com/HyperTerminal...load_L412.html