Tinkerbell,
I got the GPS working. The RUU method (Step 4 in your folder) for flashing the radio to 3.42.50 from stock 3.37 did not work. I bought a 2GB microsd, and formatted it using the method described in this post
http://forum.ppcgeeks.com/324053-post10.html
Previously, I broke my microsd card by formatting it through My Computer->right click>format, so just dug around until I found the proper way to do it.
I then flashed the radio 3.42.50 using the card, and it worked fine. Now I had RyanMogul's ROM and the GPS radio, but could not get a lock in clear sky. I re-flashed ROMs, but to no avail.
I then found RyanMogul's post "
Here is a fix for GPS for all you VX6800 users that gps will not function!!"
xda-developers - View Single Post - 12/26/09 Multi-Carrier (Heavy) Titan ROMs WM6.1 and WM6.5 by Ryan Mogul
And after following through with instructions how to flash back to stock, then re-flash back to his ROM, I found the correct Verizon QPST settings here
http://forum.ppcgeeks.com/htc-titan/...gps-guide.html
Then I re-flashed a custom ROM, fixed the registry, and voila! Got a GPS fix inside in about 5 seconds!!!
If anyone gets a Verizon stock ROM/radio XV6800, I would be glad to help out. It seems it has been only a couple of years since the activity ceased for the device, but most of the forum links for downloads/etc. were dead, and it took the whole day today to get this thing working. Thanks for the help, its great that we have a forum that is still active!