I've have made a quick (proof of concept) port of rdesktop to OS/2. rdesktop is a free RDP client which you can use to connect to a Windows NT/2000/XP Terminal Server. rdesktop was created by Samba team member Matt Chapman.
It's not a native PM port. You'll need EMX and XFree86/2. If anyone is willing to take over from me, please be my guest since I won't be doing much work on it anymore.
More information, sourcecode and binaries can be downloaded from:
http://huizen.dds.nl/~jacco2/rdesktop/
Thanks,
Jacco
(To mail me: please be advised that I'm not in the military, but in The Netherlands ;-). --
Jacco de Leeuw
Source: OS2VOIE