With a new i-mac, how do to I view dvd on an external monitor? Do the signals need to be routed out of the vga port? I have been trying to route the outgoing signal through the firewire then into a canopus dv convertor (ADVC100) and then into the television. Can't seen to get a dvd signal out-putting through the firewire. Should I strictly focus on the vga out for a solution? Thanks.