Another good satellite tracking software package that I like is STS Plus, authored by Dr. David Ransom in Sedona, AZ. http://www.dransom.com/ (This excellent software is a FREE download, or you may offer a voluntary contribution....) The web pages also provide updated TLE (Two-Line Elements) for most satellites, which is the data needed to make the software display an accurate, up to date orbit. Dr. Ransom evidently originally developed his programs for use by NASA in their mission control centers. I have used his software with good success for public displays about the Hubble Space Telescope at the Arizona Science Center in Phoenix. Gene Lucas (17250) -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list.