Isnt there some type of issue with XM and USB, were it does not come out of stand by currectly. I decided to use the post that explains how to make your own. The post says that serial is the best way to go. It cost me $2.45 for the 8 pin mini-din cable and $1.75 for the serial connector and cover! Thats way better price then 40 something dollars, and less headaches.

Here is the link to it..... http://www.mp3car.com/vbulletin/faq-...ml#post1148676