dancks 4 Light Poster

I tried this once before on my laptop 10.5.8 but I couldn't get that to work despite online help:

http://forums.macrumors.com/showthread.php?t=1233494

everything I tried is detailed in that thread

I decided I want to try this again, using the same method perhaps on the iMac 10.6.8 I was just wondering if anyone here had experience or if you can give me any tips on what to look for.