Ok..I think I've just about this figured out now. My apologies for all the questions, but I'm new to this stuff. Last question....I hope.

Right now I don't have the Dice Ipod kit and my Ipod works fine in conjunctin w/the CD changer, so I think can just leave that as is (I don't really need the CD changer anymore, but the two are working w/o Dice).

Next. Once I replace my existing radio module with the upgrade, and then purchase a Sirius receiver and antennae to replace my XM equipment, how does the Sirius receiver connect to the car? Do I need any extra adapters (i.e. blitz), or does the Sirius equipment hook directly to the car somehow (via the CD changer perhaps)?

This should be all the info I need. You've been great! Thanks man...