Hi, thanks for the replies.

1. It's Adobe Reader 9.
2. Filename is VirtualFamilies_Game Guide.zip.
3. Tried opening it again - with AR. Got this message:
Adobe Reader could not open 'VirtualFamilies_Game Guide.zip' because it is either not a supported file type or because the file has been damaged (for example, it was sent as an email attachment and wasn't correctly decoded).

So, I deleted it. Where can I access the Game Guide download again (without clicking a button that says Buy It Now, 'cos I already paid for the game with guide included)? Also, I forget everything I ever learned about zipped files. I thought there was supposed to be an option saying unzip file of something like that. Any suggestions anyone?