Could I just add, it works with keynote, which part of iworks 05, on the if you have an apple macintosh computer. You just have to download the file and then open it up first.
I would also say it would work for people on a PC or don't have keynote if they have Open Office which is a free office suite a bit like Microsoft Office, which you get it from -
http://www.openoffice.org/
Thanks for the link Stropz it mad me smile too.