Hi Bones and Alex, Thank you for your pointers to XML tutorials, I'll certainly by doing some digging. One thing I forgot in the excitement of getting the digital compass to work. Bones mentioned that using .CAB files has the advantage of keeping your gauges file looking tidier. I was going to say that I guess a corollary of this is faster load times. My FS2004 gauge directory has 3,824 files, so I am guessing the system will take less time to load one CAB file than finding say 50 GAU files from the 3,824 total. That way one CAB file for each aircraft makes sense, and although there may be gauge duplication the XML files are not huge. Frank T.