Extreme Newbie needs help

[BigRedGonzo]

I downloaded the RUU_TITAN_ALLTEL_WWE_3.35.671.9_RS_TITAN_03.37.20_ Alltel_2.01_AM_PPST_Ship.exe upgrade and installed it. I then did the unlock procedure from the xda folks. Then I installed the GPS functionality files. Everything works perfectly, but I still have a couple of questions.

1. Is there a way to change the GPS to use assisted or all sat?
2. I have an unlimited data plan, does the GPS function cause any additional charges?
3. How do I upgrade to Windows Mobile 6.1? Is it worth it? Do I have to reinstall everything, if I do upgrade? Do I have to redo the GPS functionality?

I am new to the Pocket PC stuff and hate to sound ignorant, but how else will I learn.

Thanks,
BigRedGonzo