Norio, it works just like TSC does, so you can use it via whatever connection you want.
I think I found it while looking through the XDA Developers Forum (I can't remember, it was a couple days ago). The File is called
WM6 RDP-Finster.cab
http://forum.xda-developers.com/showthread.php?t=292895
It's also listed on this site as well.
This site doesn't require you to register
http://pdaphonehome.com/forums/ppc-6...op-client.html