Hi all, I have just purchased my first Mac (have been using an iMac at work for quite a while)......got the 1.83 GHz MacBook. Originally I wanted to get the 2.0 GHz White model.....but it is on back order at most places. My question is....does it really make a huge difference? I am using it mainly for Internet (browsing, iChat, etc.), so nothing intensive like gaming or photo editing. Would this work for me?? And should I upgrade the RAM?? Thanks!!!