I just purchased a GPS360 for use with my streets and trips. When I plug it in on my laptop running windows 7 64 bit it will connect and disconnect over and over again and never stay connected. It will work for a few seconds in Streets and Trips but disconnects after only a few seconds. It will show up in the device manager correctly but disconnects quickly and goes away then comes back. I have tried installing new drivers and restarting the computer and so forth. I am out of ideas. Thanks.