Q: Transferring data from crashed pc to new MacBook Pro Retina

I am trying to transfer data from back-up discs from my old pc to my new MacBook Pro.  I have a USB superdrive and have inserted the first backup disc but the Macbook does not seem to be responding.  I am trying Migration Assistant but it is stuck on the 'Looking for source' screen.  Does Migration Assistant work for a pc backup disc?  If not, how should I go about transferring the data without having to do it file by file?  I also have the pc backed up on Carbonite but they will only transfer the data to a new pc and not to a mac.  Help!