Hi there. I'm really not familiar with Apple computers and I'm looking forward in buying an iMac Intel 21.5-inch. I just wanted to know from you guys that uses Apple computers and the experts, too. What is the difference of Apple and Windows? I mean, obviously they're different systems but, I want to know the details like, browsing the internet, what programs can you use on windows that you cannot use on Imac Intel & even a friend of mine told me once that the Apple keyboard is totally different from Windows, too. Anyway I just want some advices and clear explanation about using Apple and using Windows. I know if I buy it, instead of upgrading my Windows machine. I'm gonna go to the store and check it out and everything, but I just don't want look like a Newbie, and I definitely don't want to regret it(if I buy it) so Thanks for the replies!!!