As far a cable to connect your Touch Pro to your HDTV- you can. You can make one, which i did or just buy one...
http://cgi.ebay.com/TV-AV-Video-Cabl...item4149330041
You can also make your Touch Pro as an external keyboard...I have a UMPC with no keyboard...I plug in my TP and use the phone keyboard to input data onto my UMPC...
http://www.nuerom.com/BlogEngine/pag...BKeyboard.aspx
Bonus
Connect to your Touch Pro to your pc without cable- through wifi.
http://www.1800pocketpc.com/2009/11/...sing-wifi.html
Tried all three...they worked great on my TP