hi. i'm thinking about upgrading my mac from os9 to osx. anything i should be aware of before i make the purchase and do this? i don't deal with macs much, in fact it's not even my mac, but i'm the computer guy so i have to deal with it. is it fairly simple to do? also, i think i've read somewhere that osx integrates well with a win2k environment, is this true or did i just make that up? comments, concerns, are welcome! thanks, chris.