holy crap, I swear some people need to have their caps lock key forcibly removed.
You need a registry editor, like PHM Registry Editor. They are textual entries located in a vast array of directories such as you pointed out with HKEY_LOCAL_MACHINE\Software\OEM\TFLOSettings. Using the registry editor you can edit the data and change the values. Careful with adjusting random values though as they can seriously screw up some parts of the phone if you edit the wrong things.
PHMRegEdit
http://www.pocketpcfreewares.com/en/index.php?soft=31