We currently offer a massive range of downloads for FSX, as well as older flight simulator add-ons for the ever-popular FS2004, FS2002, CFS3 and now becoming ever popular with dediced virtual aviators is Laminar Research's X-Plane series.
Is the gauge still there (Gauges/fs9gps.ca? If not you can extract it from cd. Be aware of gauge cleaner programs some of these programs will remove the cab files because it thinks it is an unused gauge. Most of these programs allow you to back up any gauges it removes look in the folder where the program was installed into for the backed up files.
Then just click and drag any files back into the gauge folder. A little quicker than going back to the CD.