Hi! My gunsight in CFS2 vanished, I don't know why. I have an Athlon 1800, GeForce 3 ti-200 and Windows 2000. The gunsights in CSF1 and CFS3 work perfectly! Thank you very much!

There are several available for download that look beter and are more functional, Try a search for Gunsight_64 on the CFS2 pages

Gunsight Swapper is the best little gunsight program out there IMHO. I am at work, but I believe it was made by one of the boys over at the RAF Squadron.
With this program you can select from the stock gunsight to several different designs and colors. The "Little Alien Sniper" is my favorite and is all I use anymore. Very unobtrusive in free flight and very good, with a little practice, in combat.

After e-mailing the author of the program and getting permission to post, it has been at my CFS2 site for a long time now. I am not sure if it is here at Simviation or not. Seems I have seen it here, but alas, this old brain ain't sure of much nowadays!  It would probably be in the CFS2 Misc. section.  If not, here's my site: http://www.brennt.com/hoppers ;  Give it a shot too.