The key feature for really useful and functional touch Tablet PCs is the inclusion of both the Wacom Active Digitizer Pen and the capacitive touch screen. The T4310 is one of the many new Windows Tablet PCs that include both!
A touch screen on its own makes for a very limited Tablet PC experience.
Navigating web pages and opening programs is a dream with touch under Windows 7. On the other hand handwriting recognition, sketching and note taking are completely impractical with touch.
So the inclusion of the pen gives you both the convenience of touch and the note taking and sketching functionality of the accurate digitizer pen.
Take a look at the Fujitsu Lifebook T4310 in this video below: