I would make them a fried cheese sandwich, teach them English, explain why 1/2 the world wanted to kill them and then I would get them a membership on PC. I would ask which ones are the females and proceed to give them an "education". With the first alien/human halfbreed we we would proceed to educate the the world about the possibilities. I would then organize an aliens night out, a mixer for aliens and horny humans. Pretty soon we would be overrun by aliens of all mixtures and my work on Earth would be complete. I would get on the spaceship and zoom off ready to infect the next planet.

I skipped a lot of details but I think you get the point...