yeah, that's right - just two plugs at the bottom, one for filling, the other for draining. here's the deal: make sure the car is on flat surface and rather cool, the ATF temperature should be between 30-55*C/86-131*F (according to Bentley) for accurate measurement. run the car in neutral and uncsrew the large hex plug (17 mm IIRC). if the ATF level is ok, the oil should be levelled with the top of the plug hole, so no oil is dripping from the hole and it's not possible to pump any more in. it's safe to test the oil level with your fingers, there are no moving parts over there.