I've found numerous references on the web to the registry edit that disables "EnableDebounce", including this forum. Some will even say that you can stop your MCE remote from sending out toggle codes by doing this registry edit. Isn't that impossible because the physical remote control (pn 1039 for example) is hardwired to send out IR codes and I assume it's doing the toggling, so no registry edit is going to change what gets transmitted; the registry edit just changes how the IR is reacted to by MCE. If the remote is actually toggling between two different IR codes with each button push, what I've yet to find is how to accurately LEARN the IR codes from one of these remotes using a universal remote. Has anyone solved this part of the problem?

It doesn't really matter. Once you change "enabledebounce" the MCE system doesn't care which version of the code it receives, so it doesn't matter which one you learn.