ragwing you know your stuff m8....and between crashes and reboots im at the stage where im left with the legacy keys and the 002 keys non will delete...
Well, for some it can't be deleted, I think only SYSTEM has access to it actually.
Here's how to do it:
Open regedit/regedt32, nighlight the key and select the Security\Permissions menu option. Turn on Replace Permission on Existing Subkeys. Highlight the group Everyone and set the type of access to Full Control. Now you'll be able to delete it. The legacy is stored under the 00x keys, and is used for the Last Known Good Configuration in boot menu. It not meant to be deleted if you still have the driver installed, because if you do, you might mess up your system. But if it's uninstalled, there's no danger in doing that.
I think batch files doesn't bypass this, so they might not be able to delete those keys, as they most likely will use the current user's access rights, and not the one for SYSTEM.