In anticipation of a cross country jaunt next month, the wife and I've decided that a satalite radio might be a nice addition to the van. We've settled on Sirus since the streams offer what we're looking for (Groove Radio!) -- would someone who has this system tall me what's involved and what equipment works well? We're headed to Circuit City tomorrow to window shop, but would like a little eductation beforehand.

thanks,

john