Seriously, I feel your pain! I just found a similar thread I started on the topic long ago. I’ll have to go back and read it in a moment to see how it all turned out.
What do you do with your cats at night? - In My Humble Opinion - Straight Dope Message Board
But what I remember is that my cat remained a terrible pain in my ass for years until we moved out to the country and got a house with a cat door. 