I purchased Office:mac 2011 at the Apple store, came home, and inserted the disc in my iMac. Office 2008 was already installed. When I inserted the disc, nothing happened. I can't "see" the disc in Finder. Can anyone give me some advice on either a) how to initiate the installation, and/or b) how to eject the disc from my iMac. I'm relatively new to Mac's, but still feel I must be making some really fundamental blunder. Many thanks!