Your ignition is controlled by the PCM and there is no adjustment if the timing belt is installed correctly
Here are the instructions for the timing belt... http://bit.ly/ksmv
The oil on your plugs depends on which side has the oil. If the oil is on the spark side, that could be your oil control rings or valve seals allowing oil to contaminate the plugs. If it is on the insulator (where the wires connect to the plug) this could be your valve cover gaskets leaking oil into the spark plug galleys.