I successfully modified my 7100T
by replacing the keypad and housing. It was quite easy (though a little costly) and now looks a about a thousand times better!
I ordered the housing kit and keypad from: http://www.bbrepairshop.com/parts-7100.html
1. Complete housing for BlackBerry BlackBerry 7100X (interchangable with 7100g) - OEM
2. Replacement Keyboard for BlackBerry 7100g and 7100x
The existing keypad does "work" with the housing, but not well (far left and right column of keys need to be pressed in hard in order to be recognized.) Replacing it is easy because the old one basically pops out and the new one pops in. The finished product
(sorry for the crappy camera phone pic.)