poker 1vs1 headsup

Hey guys. I'm just looking for a decent poker program where you can play for fake money with some contacts in msn in headsup. I mean where you can open a server and the other one can join with password. Any ideas? I don't mean a program like pokerstars, pokerroom, poker.com, everestpoker, truepoker, partypoker, etc. Already have those. And if you don't know any program, maybe you know how you can do so in the programs mentioned before.

Cheers,
Ph!l \o/

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EDIT: Is there a program where you can start sit&go tournaments with friends and play money?