Hi hemmohohto,
Welcome to Laptop GPS World.
Terry wrote nice step-by-step instructions on how to connect Bluetooth GPS receiver to a laptop PC:
Bluetooth GPS connection to laptop - you might have already connected the GPS to your laptop, but I provided the link just in case.
I cannot think of what the issue could be. I only had a limited-time trial version of Mapfactor PC Navigator 7, and that was almost a year ago. I don't recall what the setup options were, but Mapfactor sells the product bundled also with Bluetooth GPS units, so it should work.