Ok, excellent...
This is a real easy thing to fix
Goto My Computer -> Tools -> Folder Options -> View -> Uncheck
Simple File Sharing
Apply and OK out of that window.
Navigate to the folders that you want to access and can't.
Right click on the folder and select
Sharing and Security -> Security -> Advanced -> Owner -> Select your username and check
Replace owner on subcontainers and objects -> Apply and OK out of that window.
You should now have access.