Expunging a felony in IL?

I have 2 felony forgeries in the state of IL for 2002 both cases ran concurrent and I finished my probation and went on to grad school. I now find it impossible to get a job despite my education because of my criminal background. . My question is: can I get a felony expunged and how do I go about doing this. I've heard that felonies cant be expunged only pardoned, I've heard that it can be sealed and so fourth. I need to know the real deal, I am desperate for correct answers. Please it you have personal experience or have definite knowledge please answer and let me know what to do and how to go about doing so. Again I live in the state of IL.