Genghis/GT,
Thanks for the info. I've decided to use Cos(Lat) since it's so simple.
Progress so far is excellent - the software will now identify all the NOTAMs within a specified distance of your course. I need to do some testing on this (compare the distances the software says with those I measure on a chart) before I move on to the user interface, and I have a fairly busy week coming up, but if progress continues at this rate the beta version will be ready very soon. But unless you guys can get me some icons and images to use, it's going to be a very bland looking beta version!
Anyway, keep watching this space, I'll be looking for beta testers before too long.
Cheers,
FFF
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