You will need the Macromedia Flash Plug in to run the invites. Most modern browsers have this built in. If you don't see anything when you try running the invites below, you'll need to install it.
If you don't have it you can get it from here
The full works, with sound and everything (fast connections e.g. 56k, ISDN)
Cut down version, with no sound (normal connections)
I would like a cup of tea and don't understand what's going on please could you just tell me where to go