I haven't tried it, but I'm interested in turning that center button into an 'ok' button. From what I hear, the TP2 is very similar to the Imagio, so you may be able to use something like this:
http://forum.xda-developers.com/showthread.php?t=554240
Again, I've never tried it, but maybe it's something you can try. Make sure you back up your phone, etc. before doing so!