How many times have you heard this phrase: "This is Haram, That is Halal"!
If you are a Muslim, then you probably hear these words repeated around you every day. You will hear them in school, you will hear them on TV, you will hear your parents say them, you will hear scholars and Imams say them, and, you will find tons of books written on the subject.
Just click on any of the traditional Islamic Web Sites and read any Q&A or Fatwa section they may have. You should find something like this (someone actually asked this question in an Islamic site):
"Is it Halal to eat in a Microwave in which Pork has been heated?"