This NYT article is worth a read.
<http://www.nytimes.com/2009/12/15/science/15books.html?_r=1&8dpc>
In it you will find
<http://www.google.com/sky/>
And
<http://www.worldwidetelescope.org/Home.aspx>
The latter requires starlight app and ~ 50 megs of RAM. All free.
Neat way to gander the heavens once in awhile.
Bill
--
Garden in shade zone 5 S Jersey USA