EDIT -- Hi everybody. I don't really have time to mess with this any more at the moment, but Reefermattness has offered to merge this with his utility (PPCGeeks thread, XDA thread), so I'd check there for any additional updates/requests/etc. Thanks!
I like having my backlight auto-adjust in WM, but for the time being we still have to turn that off before launching Haret in order to have backlight control in Android. So... here is a little app that does just that... disables the automatic backlight adjustment and then runs haret. Just install the cab and look for "Android Launcher" in your Start menu (you still need your own Android package on your storage card - including haret).
I made this mostly just for myself, but figured I'd share in case anyone else finds it useful. I'm by no means a developer (more of an amateur tinkerer) so I don't really intend to offer much support or additional development.
Also, I had originally intended to write another little program to run at Windows startup to re-enable auto-adjustment, but it doesn't seem to be necessary. The setting doesn't appear to stick after the system reboots. Maybe there isn't enough time before haret runs for the registry to be committed. Not really sure, but I'd be curious if anyone else's results vary.
Edit - new version configurable via the registry. Change the string value at HKLM\SOFTWARE\AndroidLauncher -- HaretLocation to reflect the location of haret on your storage card.
Edit2 - added app to re-enable the auto-adjustment on Windows startup, since the results seemed to be inconsistent. This will ensure that it is back on when Windows starts. If you've downloaded previously, you might want to update to this version.