N82 questions - GPS, gpx files and divx

Hi guys

My N82 arrived from O2 today!

I love it, but have a couple of questions;

1. How do I turn off the auto-screen rotate? It's really not that
great and I've begun to find it annoying.

2. Is there a way to import .gpx files into Nokia Maps?

3. Are there any good 3rd party divx/avi players around?

4. What's the best 3rd party msn messenger app at the moment?

5. Does anyone know if there's a patch to use the internal gps with
tomtom navigator 6?

thanks for all your help!

Paul