Vaccinations...How often?

I am getting a female maltese that is 7 weeks old on Saturday (LW). It didn't cross my mind that the vet has bills to pay also and I can remember the vaccines they suggested my older maltese gets. Well I have been doing some more research and realized that you can over vaccinate your dog. So the major question is: What vaccinations should she get (She will be UTD at 7 wks)? (Can you find a legit schedule?)