Most GPS receivers for the PC don't require any software other than the GPS application (such as Streets & Trips, iGuidance, Destinator, etc.) to work properly.
For the unit you're looing at, you would need a bluetooth adapter for the PC you want to connect to the GPS receiver, obviously. The bluetooth adapter should be capable of using the bluetooth connection as a virtual serial port.
There are plenty of FAQs in the
FAQ Emporium subforum that relate to GPS that will likely answer your questions.
Good luck.