Hi, I am on the verge of buying a C2D MacBook. However, I want to upgrade the HDD to something much bigger than the standard. So, my questions are... - What type of HDD actually works in a MacBook. What technical stuff should I be looking for on websites? - What's the biggest capacity available in this type of HDD? - How much difference does the RPM speed make. I don't do anything complicated on my computer, and I don't work with particularly big files, but I DO want it to be as "snappy" as possible. Will I be able to tell a difference when launching iApps, for example? - I'm in the UK -- where's the best place to buy HDDs? Any particularly good deals for large/fast drives at the moment? - Not sure whether anyone knows this yet, but can AppleTV access an external HDD attached to the new Airport Extreme. If so, this would reduce my laptop capacity requirements. Thanks very much for any help you might be able to provide on this matter. Cheers, Steve.