Spouse Sponcership

Hi There

I have a question. My wife she is a Canadaian Citizen. I was a refugee claim in Canada and I got deportatoion order in 2004 but I didn't leave Canada on the date I had to leave.I got pull over and my wife and I left Canada in 2007. Now my wife and I both are outside of Canada, living in Iran. I'm going to have an interview for my permanent resident file next month.
I would like to know if I have any chance to get back to Canada and please tell my what questions I'm going to be asked.
Please give me information if you have from previouse interviews.

Thank you