most all usb gps receivers are serial. They basically have a usb to serial adapter built in. So once you plug it in, you should see another serial port. As far as I've seen anyway.
The best resurrected frontend I've ever used, period.
MeHere works with almost all GPS recievers.
I'm having some issues with the ports...
This is a bit off topic but I hoped maybe you knew more about it.
My EVDO reciever for some reason locks down a bunch of ports (everything from 1 to 12) the rest I can still use with Xport.
Is there any way to lock the ports that Xport3 uses? So that when I restart and plug in the EVDO reciever it won't disable the ports Xport uses and therefore hopefully wouldn't cause Xport to throw and error and effectively disable all my GPS stuff :-P. It seems as if Xport3 attempts to use the ports if they're open, but for some reason this EVDO software locks it all up. Under my device manager these ports aren't used but they won't show under the Xport3 drop downs.