You could always copy the entire C:\Program Files\RealflightG3 folder from your old computer to the new computer.
This works with the following caveat.
- Make sure that both the old and new computer are running the same revision level of G3 before you start. Preferably update both first.
- After you've copied the G3 folder to the new computer ( overwritting any files found there ), bring up the lancher on the new computer and be sure to "reset G3 to it's defaults".
Do that and it works very well.