Sirius Satillite Radio

I'm thinking about installing a Sirius Sportster unit myself in my '02 Mountie - I'm an automotive novice. Any suggestions or help would be appreciated. Some questions I have:

Does the stock radio (Audiophile 6 disc in dash changer) have the necessary conntections to hardwire?
Where to mount the antenna?
Where to run the wiring.

Thanks.