As you can from the screenshots I do not have an HKEY_LOCAL_MACHINE\SOFTWARE\OEM\SMS and I guess this is because I have the Palm Threaded app install. Here are all my registry shots for Palm
HKLM\Software
HKLM\Software\OEM
HKLM\Software\Palm\Messaging\Prefs
HKLM\Software\Palm\Messaging\General
HKLM\Software\Palm\Messaging\MMS (part 1)
HKLM\Software\Palm\Messaging\MMS (Part 2)
HKLM\Software\Palm\Messaging\SMS
