I have a '99 Pontiac Grand Prix SE. I went away to school for the winter and my parents drove my car while i was gone. They don't take good care of it because when i got home i found two small holes, one on either rocker panel. I have had rust before and used a rust converter and repainted the rust spots but its keeps coming back, but now it's even worse. I have to fix the rust before I head back to school because I am taking my car with me and my dad says that it won't pass inspection with the rust spots. I am planning on getting rid of the the car in two years when i get out of school and use it for a trade-in so i want the car to be in the best condition it can so i can get the most money. I was wondering what the easiest way to fix the holes right now would be and any measures i can take to prevent the rust from occuring again. I live in New England so we are prone to rust. Thanks for any help or advice.
-Scott