Have you tried Logitech Touch Mouse? If not, do it now!  

It is no.1 app. On the Apple Application store for iTouch. And it is simply fantastic. I recently downloaded the Logitech Touch Mouse app. for my iPod touch (free app.) and was really excited to use it.

The app. worked flawlessly after I installed the Server software on my PC. I started with simple mouse browsing and it was definitely fun and good to have a wireless trackpad.

And amazingly, when I pinched the iPod after opening a picture, it actually zoomed. The pinch gesture however didn't work when the photo was shown by Picasa.

The keyboard is great too, and shows what you are typing on the screen.
Try this app. now, you will love it.

Regards,
AJ-Rox