Forgive my noobness and lack of concrete specs. Can furnish later but want to get this out there before I forget. I have a MB 2,1 that im *fairily* certain only needs a RAM upgrade to get to OSX Lion. Currently on 10.6. Going to do a clean (backed up) install and am wondering if it would be worth it to get the RAM and OS increment during the whole process. What $$ am I looking at for the RAM upgrade?