Since others may not look in the VA thread..
This pertains to the Samsung Omnia Sch-i910 on Verizon Mobile. DON'T ASK ME ABOUT OTHER COMBINATIONS. I don't know because I didn't invest any sweat making those work. I own an Omnia on Verizon, and got it going on mine.
Early release Omnias will need the upgrade that Hokie4life refers to, but that's not the end of the road.
Verizon did open up GPS for other applications, but did not enable the "External GPS" control in the Windows Mobile Settings control panel. The GPS applet is on your Omnia, but a registry setting prevents it from being displayed. There is a hack available to correct this.
Once you have the "External GPS " applet available on the "System" tab of your settings:
On the "Program" tab, select "COM8".
On the "Hardware" tab select "(None)" and 4800 Baud rate.
On the Access tab make sure "Manage GPS automatically" is checked.
I know that "None'" sounds counter intuitave, but it works!