Use Regedt32 to navigate to:

HKEY_LOCAL_MACHINE\Software\Classes\Folder\Shell\Open

Set the REG_BINARY value name of EditFlags to 01000000. Browse to:

HKEY_LOCAL_MACHINE\Software\Classes\Folder\Shell\Open\Command

and set the unnamed type REG_EXPAND_SZ value to C:\WINNT\Explorer.exe /idlist,%I,%L %1

Finally, edit:

HKEY_LOCAL_MACHINE\Software\Classes\Folder\Shell\Open\ddeexec

and set the unnamed type REG_SZ value to \[ExploreFolder("%l", %I, %S)\]

After a reboot, double-click My Computer, On the View menu, Click Details. On the View menu, click Options. On the File Types tab, scroll to Folder and select it. Click the Edit button. Click Open in the Actions: box and press Set Default. Click Close and Close.

See tip 765.