Here is something usefull & entertaining for you.
"Scroll down about half way to- DEEP SKY ASTROPHOTOGRAPHY USING THE MODIFIED TOUCAM 840K PROII...
http://australian-astronomy.bravehos...astropics.html
I found the videos quite impresive considering it's just a cheap webcam!
I think it's a great way to get started!!!
Hope that helps.
Dave