I've got a question for all of you knowledgeable Mac devotees. I am waiting to purchase a 20" iMac in mid-January (that's when I will have the funds available) and I couldn't be more excited. Wow, who would've ever thought I could be so excited to purchase a computer. The anticipation is killing me! Anyway, I was at Best Buy the other day test-driving an IMac and I noticed that the one I was using had a planet earth background that was a beautiful pic of the earth that was showing our lovely planet in real time. In other words, it was a background showing the earth while it was rotating (from a satellite?) in real time. Is that background a Mac application or is that something that's available for Macs and PCs? I'm purchasing the IMac for home use but I'd love to have that background for my office PC (sadly, that's all my office uses). Is that available? Thanks for the info.