I have an MCE HTPC. I used the Microsoft IR keyboard to teach most of the key commands to my TSU7000:

[Link: remotecentral.com]

Now, a TSU7000 is pretty small for a keyboard, but it's useful to have the key commands for short use. Presumably, the TSU9600 might be just a little better, due to its higher resolution (and fake keyboard usage may be a reason to actually use the stylus).