Sorry sir but you are as we say in the intelligent world, screwed. Your first problem was going to that poor excuse for a school. Nothing personal, but it has a reputation of being a scam that takes advantage of people such as yourself. Secondly charges of cheating stay on record forever and their are not many ways of having them expunged. Even if you leave the University to go elsewhere they will follow you. The only thing i would advise is to contact an attorney or a highly skilled English Major to help you write a damn good apology letter admitting to all charges and formally stating you will never do it again. Talk to the dean of students, if they have one.
You and U of Phoenix deserve each other. Keep cheating.