Sure Simon. This is the one I'm running. I use an iPad... http://fingerlab.net/portfolio/imotion
and this page seems to have a lot of info on the subject too. http://www.stopmotioncentral.com
Please keep us posted on progress. It really is fun making these little people come alive. I got a few more figures and vehicles off ebay. While I'm waiting for them to get here, I am working on magnetic feet for them. I cut some thin magnet material (made for business cards) and stuck it to their feet. Then they can be easily moved on a steel platform. Also coming are some tiny magnets from ebay.
I hope to get the Greendale Rocket running on the layout. I think I have a good donor drive loco if the thing is the right size.
And Wallace & Gromit are bringing friends to the party too.