There are no special instructions for multilink configuration, except one note: you should use the same MTU setting for both modems or network adapters (if they appear as two different network connections in TweakMASTER). Other then that, just optimize for "dial-up connection" in case of phoneline modems or "broadband" in case of Cable/ADSL or other broadband connection. You may also want to raise TCP receive window using Advanced Optimization dialog.