i use (in windows)

Netstumbler with a bluetooth gps receiver for spotting wifi spots and collecting the gps location,This works well altho not as accurate as i thought it would be,The summary file is saved and used with Stumbleverter and all wifi spots plotted to auto route maps (very cool imo). I have no bluetooth built in so it all runs through a dongle, (fine in xp) but BT2 does not see my dongle.

Q,1 How do i get the dongle up and running in BT2?
Q,2 Can BT2 plot wifi spots from a gps?
Q,3 Can settings be changed to make gps locations accurate?

Thanks for any help with this......