It happens to us all. You deleted your My eBooks, My Videos, and My Music folders only to open up the same folder a few minutes later and find they had in fact not been deleted after all. It is time to get rid of them for good.
Go to Start > Run > type "Regsvr32 /u mydocs.dll" and press enter.
Press OK on the new dialog box.
Go into My Documents and delete any of those "My" folders you want, they're not coming back!

How to Get Rid of Your eBooks Once and For All
How to Get Rid of Your eBooks Once and For All