Many of you may have already seen this great satellite tracking program that works on various platforms, I have a link to it on my site as well as a small video that shows you what it does without going to the trouble of downloading it first.
Go to:
http://tailwag.info/radiosoftware.aspx
Satscape is a satellite tracking program for Windows, Mac OS, Linux, Sun Solaris, and FreeBSD operating systems. You can use it to find out the position of any of the 8000+ satellites and orbital debris in orbit around the earth right now, anything from the International space station to a misplaced spanner can be tracked right on your screen with no special equipment.