You have to edit the registry to get the customize tab back:
(OPTION TWO)
User Folders - Change Default Icon
For the contacts folder it is key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FolderDescriptions\{56784854-C6CB-462B-8169-88E350ACB882}\PropertyBag
In that key you should see a NoCustomize Dword with a value of 1, change to a 0 and you can now get the customize tab.
The Desktop folder properties are here:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FolderDescriptions\{B4BFCC3A-DB2C-424C-B029-7FE99A87C641}\PropertyBag
Edit the registry at your own risk