I just bought my first X5 on Monday and I am in love! I have a 2002 with a 4.4 V8 with Navigation. I am wondering if this is the place for me to ask beginner questions? (Most things seem pretty techy). I am still trying to figure out what I have on my X5.

Questions I have are:

1. How do I know what kind of Navigation system I have?
2. What is the best way to add functionality to my system in one package? I want bluetooth phone, satellite radio, and more sophisticated navigation.