You can use HTC GPS tool, which can be downloaded here:
http://forum.xda-developers.com/showthread.php?t=360477
It will show you the number of satellites used, number of satellites locked, and the NMEA-183 data strings (which is useless unless you're a programmer trying to write a program which uses GPS).
Also recommend you upgrade your radio (less its working like a charm) to 3.42.50, which you can do by flashing the bell ROM, then w/e custom ROM you want. The bell ROM can be found:
http://www.htc.com/us/SupportDownloa...cat=2&dl_id=98
Good luck.