Just decide which one you want to use, and copy all the individual files from the folders into the appropriate directories. i.e. copy all the files in My Videos from the one user profile into the one profile you want to use My Videos.
Hope this helps.
I have two user accounts (one business and one personal, separate My Documents, etc.) that I would like to combine into one user account - Please help!
There are no passwords, etc., with either account.