I recently heard from a friend of mine whose employer seems to have trashed the frame on her TiBook/667 Mhz laptop. As she's decided to get a new PowerBook, my friend is wondering if the 667 MHz processor could be put into his 500 MHz TiBook. By the same token, he wanted to know if the PC133 RAM from her TiBook/667 could be put into his TiBook/500 which came with PC100 RAM. For that matter, what are the possibilities of just swapping out the motherboard & other internal components of the 667 MHz machine & putting it all in the casing for the 500 MHz machine. I believe that her TiBook/667 is the VGA (non-DVI out) model. Any feedback on the upgrade possibilities here would appreciated.