I found this while looking at the Sprint Official ROM thread. At the HTC site the thread links to, if you go to Product Support -> Select Product, then on the HTC Touch (Bell) link, there is an update for the Touch that apparently adds GPS and EVDO Rev. A. I downloaded this but I haven't tried it yet. Here's the link:
http://www.htc.com/us/SupportDownloa...cat=2&dl_id=31
Sorry if this is a repost, just wanted everyone to know, and I didn't see it on the front page.
Edit: forgot to add that it is also a WM 6.1 update.