How do I reset service engine soon light on a 2000 model villager?

Many auto parts stores will do this for you. If you would rather, just disconnect the negative battery cable, wait for five minutes, and reconnect it. That will reset nearly everything. My question is "Why did the light come on in the first place?" Ignoring the light could, at the least, cost you at the gas pump, and at the worst, leave you with more costly repairs in the future.