How do I force the "Logon Using Dialup Networking" to be checked by default on the logon screen?

A. This can be accomplished with a registry change on each client machine.

1. Start the registry editor (regedit.exe)
2. Move to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
3. From the Edit menu select New - String Value (REG_SZ type)
4. Enter a name of RASForce
5. Double click the new value and set to 1
6. Close the Registry editor
7. Reboot the machine