The clever souls at PhoneNews seem to have cobbled together info from dcd's posts at XDA-Developers and other places on how to get gpsOne -- this technology uses both satellite and your provider's network to determine location -- up and running on CDMA HTC Titan sets. Once your handset -- including PPC-6800, XV6800, Mogul, P4000, and likely others -- is tweaked, applications like TomTom, Google Maps, and other GPS tools will be available for your navigational enjoyment. This hack will require that you unlock your handset, update the device's software, and then update the baseband radio firmware to get at the goods. Instructions and all the files you'll need -- software updates are listed for Alltel, Sprint, Verizon, Bell, and Telus -- are available by hitting the read link. Of course, this'll likely blow your warranty away, so fiddlers beware and if you're even a little concerned, it may be patience will pay off as a provider update could bring this in the future.
Update: Fixed credit for the work, thanks everybody for clarifying