-Is- it a good idea to use more than one character's POV in the course of a story, or not?

it might get confusing. I've read a few books with 3 or 4 characters point of views being clearly marked by using the characters name for the chapters titles of their point of view but it always got confusing. But if its what you really want to do with the story then nothing sould stop you from going trough with it. ^^ I hope it goes well whichever way you choose to take it.