Hey Geoff lots of free stuff on this site, Star & Planet software. Telescope controllers, Simulators Sidereal clocks etc. as well as some other PDA related software, he provides information on the site if you have problems with runtimes. All really good quality. I run some of it on my Dell Axim PDA and now have just changed to a Ipaq so i will install on it ASAP
FREE FREE FREE
http://www.alfcen.com/pocket/index.htm