i've had a tibook for about a year now, and i'm starting to use it for video editing in my film classes. the instructor for my digital class said that for video editing it's best to partition your HD and use a separate partition for DV files. so here is where i need help... what's the best way of partitioning a hard drive without losing all of my old files? i have about a years worth of files stored on my hard drive, as well as FCP4 and AE. how should i partition it? it's 40gigs, (i understand 40 isn't a lot) how much is enough to leave for DV? how much for the OS? where do i store my iApps/editing apps? I'm running jaguar now. would upgrading to panther be a benefit? should i just not bother at all?? any and all suggestions/help welcome!