Windows 7: How to let a WinExplorer context menu run (only as administrator)?

I would like to add a new item for Directories to the WinExplorer context menu.
In former WInXP I simply add the following Registry entry:

[HKEY_CLASSES_ROOT\Directory\shell\OpenCmdPrompt\command]
@="D:\\specialprog\\batchlog \"%1\""

However: This command is not recognized (for normal users) in Windows 7.



Why?

Furthermore (in der next step!!!) this entry should only be runnable as administrator.
Where EXACTLY should I put this command in Registry so that it cannot be run as normal user but as administrator

Peter