Ordered my very first iMac on Nov 30th. I noticed a lot of folks here are purchasing memory from other vendors but I was wondering if there is a document explaining how to install it (such as this one). http://support.apple.com/kb/HT1423#1 My understanding is since there is no memory access door in the new model, you have to unglue the screen to get to the memory slots. Wouldn't that void the warranty? Thanks!