A 4gb meal for the King of the Jungle
5 - 10 minutos
My 2007 15" MacBook Pro had served me just fine with the 2gb of ram it's had since I purchased it, but as soon as I installed Lion, I realized it wasn't going to cut it any more.
In, out and rebooted in under 5 min.
Splurge. Buy the recommended screwdriver.