Welcome to the site, there's a lot of knowledgeable people on here.
You'll also need access to a 'Mac' that's got firewire capability with the EOS Utility on, if you want to be able to change the copyright info in the exif data on your pictures. As for the cable itself I'd say maplins or LCE (London Camera Exchange). This is assuming you don't have a PC with working firewire capabilities.
I'm not trying to put you off or anything, these are the pitfalls I came across when I got mine a couple of years ago.
Anyway have fun when you finally get hold of it, and post them pictures.