KRDC is an KDE graphical client for the RFB Protocol used by VNC.
If rdesktop is installed, krdc can also connect to Windows Terminal Servers using RDP.
I know some people have already suggested getting some QT and KDE applications working as portable apps. One of the tools missing from my portable apps tool chest is a remote desktop application.
Nevermind..
I guess KRDC won't work on Windows
http://mail.kde.org/pipermail/kde-windows/2008-September/003098.html