Hi there, i've thinking about trying a mac for the first time with the arriving of the new imacs, but i have some doubts about how can i do a couple things. I burn a lot of dvds in my actual pc, and a lot of those burnings are dvd to dvd, i mean one optical unit reading and the other one burning. In the case of buying an imac, how can i do something like that?, cause of course i dont think it would be a good idea to abuse the imac internal optical unit with a lot of burning tasks. Can i use something like 2 external dvd burners at the same time to do that job? Thanks a lot for any advice.