Which files are which???
That should be fairly apparent. Word, Excel, image and music files all have there own and different extensions. Not only that the owner of the computer should know where all those files are located on there older computer.
With most Windows version by default all those files get stored in the My Documents or in the Documents folder on later version of of Windows, Vista and Win 7. Although on 7 and Vista there are separate folders for Music, Pictures and Downloads.
That is if they have not placed them someplace else. Which for me I varely rarely use the default, OS selected, place to store my personal files, music and images and even if I do I move the My Documents and Documents folder to a different drive then where the OS is installed. I even do that on Mac. There is nothing in the OS X Documents folder or the Pictures or Music folder under Users on my Mac.
The default location for all files is C:\Documents & Settings\User Name\My Document that is in Windows XP.
On Win Vista or 7 it is C:\User\User Name\Documents.
Maybe I'm wrong! I forget the majority of computer users have no idea where all there files are. They just know they are on their computer, somewhere.
So I'm going to butt/bow out of this topic and suggest to the OP that he somehow get the Migration assistant working. And if he can't I would be hapy to assist in any way I can.
In that vane try downloading the Windows Migration Assistant software again as I think the first time the file got corrupted.