Disable Windows Mobile (WM) 6.1 SMS sent notification

For anyone wanting to disable the SMS sent notification you need to change a registry entry:

Use this program to change the registry: http://pocketpcfreewares.com/en/index.php?soft=1399

Change the following dword:

[HKEY_LOCAL_MACHINE\Software\Microsoft\Inbox\Settings]
"SMSNoSentMsg"=dword:0