I'd like to upgrade to Lion, and keep up with new OS releases. To do so, I'd need to upgrade my 2006 Core Duo Macbook to a Core 2 Duo. 1. Is this even possible? I'm reading conflicting reports about whether or not the processor is soldered on. 2. Is it even worth it? I just bought an iPad and cannot afford another computer as a student. My Macbook still serves me well. I've been using it for 5 years. I just want to have access to new OS features, like the new mail app. Thanks!