Is this a good buy? It has the 700 mhz process 350 mb of ram. No airport card, and it is in less thang good shape. Lots of surface scratches the battery bay won't close well. Some otherr questions, will it be able to upgrade to Tiger at least? I think Leopards out but I want it as recent as possible. Also is the iWork 06 program good? Need it for PPT Word and Excel compatibility. This is my first apple comp and I'm gonna use it to take notes and stuff in class.