Upgrading RAM on new iMac
I'm going to purchase the new iMac when Leopard comes out. I want to increase the RAM from 1 GB to 2GB without buying it directly from Apple. Whats the best to do this. More importantly- if I want to upgrade to 2 GB, do I only need to buy 1 GB because it comes with 1 GB already? Whats the best way to purchase this? Thanks!