There you go.
Though something weird, apparently you can no longer individualize WMP9 systems anymore. It just gives an error about the service being offline...
So yeah, I don't know what, if anything, I'm doing wrong, all my DLL's were "virgin" 9.0 versions, yet my DRM mysteriously made itself 11...
--EDIT--
I tried another VM (I have a 'virgin system' of XP SP3 that I just clone whenever I want to test things) and installed WMP10 in a way that made my wmvcore have the same version 10 as the rest of them. Still gave me the newest IndivBox.
--EDIT 2--
I tried installing those three Windows Updates (again, on a fresh system) before individualizing. Still gives me the newest IBX. It seems that the wmvcore.dll only stays at version 9 if I attempt (and fail) to individualize the system while still on 9 - if I install 10 without playing anything DRM on 9, it updates on first go.