You can copy from one user ID to another

Each user ID has its own set of libraries (i.e. Documents, Music, Pictures, Videos), but you can access them if you have admin authority by clicking Start -> Computer, then look at the C: drive for the Users folder. Click on that and you'll see each user ID. When you click on one of the user IDs, you'll see its libraries. You can then copy from them to the one you want.

Good luck.