I have a fairly new 17" MBP and want to upgrade the HD to a 160GB. My first PowerBook was a Ti550 and I upgraded the HD myself w/ no issues. I felt confident doing that because I knew that it wouldn't void my warranty. I haven't been able to determine if the HD on my MBP is user serviceable. Does anyone know? Has anyone tried it? -- "I stand by this man (Bush 43). I stand by this man because he stands for things. Not only for things, he stands on things. Things like aircraft carriers and rubble and recently flooded city squares. And that sends a strong message, that no matter what happens to America, she will always rebound with the most powerfully staged photo ops in the world." - Stephen Colbert