In the 'Start Search' box on the Start Menu, type:
shell

ersonal<Enter>
That should open the folder that Vista thinks is your 'Documents' folder.
If a folder opens, click once in the Breadcrumbs bar to view its actual path
& name. Use the 'Restore Default button on the 'Location' tab in the
folder's Properties dialog to move it back into your UserProfile folder. If
you receive an error message, try logging off & back on & try
'shell

ersonal' again -- sometimes the 2nd try recreates it. If not, post
back -- there're other ways to get it back.
For the 'Music' folder, try the same thing, only using 'shell:my music'
instead.
If you receive errors on the second trys of these commands, run the
following commands from a command prompt window & post the output of each.
(each command is one long line)
reg query "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\User
Shell Folders" /v personal
reg query "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\User
Shell Folders" /v "my music"