Hi Doug,
>From an economy standpoint as well as ease of use, I would give HNSKY a try
(www.hnsky.org). It's a free-ware planetarium program capable of using many
different catalogs i.e. GSC, USNO, Tycho 1&2, PPM, DSS images and such. It
can also drive all of the current popular Go-To scopes. Another popular
free program is Cartes Du Ciel (sp?) but I don't know much about that one.
I've used Hnsky for about 2 years now and love it. I used finder charts
printed from Hnsky to track down Pluto this summer past. For the price it
can't be beat.
Cheers,
Dave Staples