Is it hard and expensive to swop a graphic's card in a Dell Inspiron 1545?

Is it hard and expensive to change graphics's's card in a Dell Inspiron 1545?Is it hard and expensive to swop a graphic's card in a Dell Inspiron 1545?I don't think that you can change the graphics card, its part of the main board. It is difficult to change, since it requires to completely dis-assemble the entire laptop and quite expensive.