finally, i'm going to go and get a TiBook today. i really wanted the 800, but i guess i'm going to have to be happy with the 667. oh yeah, i'm a PC person as well, so this is my first Mac. i've heard about the keys on the TiBooks putting marks on the screen and i'm wondering if it is really necessary to buy a special thing to cover the keys? can't i just use a piece of paper? if there's anyone with any TiBook or Mac tips, i would really appreciate it if you could let me know. remember i'm a PC person, are there any things that i might inadvertantly do to stuff up my TiBook? or are they pretty much bulletproof? thanks.