>it would be easier for backup to have all of the files which >need backup in a drive of its own
Why not put them in a FOLDER of their own, then just backup the folder.
Vista does have a music folder, pictures folder, documents folder (and others) but it can get complex to know what to back up.
Just go into your "main" folder (the one you get when you click on your "name" on the top oif the Vista folder), then create a new folder with any name you like, then back that up.
Within this new folder you can create others called "documents", "photos", "music" etc and put the appropriate files in there.
Then if you back up the top level folder all the ones underneath are backed up automatically.