There are three different Garmin Mobile PC products.
1. Mobile PC software-only.
2. Mobile PC with GPS10x bundle.
3. Mobile PC with GPS20 bundle.
You need to tell us which one you have before we can help.
Mobile PC software-only version will work with any GPS receiver as long as it is NMEA compliant.
The two that are bundled with Garmin receivers will only work with the receivers they came with. It is a waste of time to try to make them work with another receiver.
You do not need GPSGate to create Garmin protocol for Mobile PC. It will use NMEA.
If you have the software-only version of Mobile PC it should find your Bluetooth receiver automatically, without using GPSGate. You might need to force it to look. You can do this by clicking on the satellite icon in the upper right corner of the screen, then click on the DISABLE button, click "Use Bluetooth GPS", and click the ENABLE button. Now it should find your Bluetooth receiver.
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