back up cubase studio 4 files

Hi i have got myself an external drive for keeping my studio 4 files save. I have asked the drive to backup everything under steinberg program files. Is this correct? all my songs are just audio. In the future i plan to move the backup files to a new computer with a 64 bit processor they are currently recorded on my 32 bit computer. I have recently learnt that most people seperate their audio files from the windows cubase sequencer drive to ease processing . e.g. two drives one for audio and the other for cubase ? whats the best way to accsess my audio and back it up .

How do you ask a drive?

Now if all your files are saved on the extrenal drives, you just have to attach that drive to the new computer