is it pretty straightforward getting the sonnet cards to work, is there one i should buy, one to avoid? something about making 3 extensions load in the right order? anyway my external 9 gig w/ ydl 3.01 craps out all the time i was thinking about 20 gigs internal and a g3 upgrade and i'd be happy for a while do usb cards work pretty well w/ ydl? -brandon