I am thinking about purchasing an iMac for Christmas (I already have a couple of laptops). I have a couple questions: 1. I'd like to run Mac OSX Server in a Virtual Machine on the iMac. Can this be done? What software do you recommend? I'm thinking about using an Xserve at work, but I have nowhere to test the software before purchasing. 2. How good are the internal speakers on the iMac? Do I need external ones?