[b]I will be going to AC in May and the only thing I play is Roulette. I was wondering if any of you have any systems that I haven't heard of and might try when I get there.

There is of course no surefire system but you can increase your odds by playing smart. The number one rule is never place a bet that is guaranteed to lose. What I mean by this is never bet more than one single number per spin. This is also the most commonly broken rule as you will see people placing chips on single numbers all over the board. If you bet more than one number at a time in the very best case of the ball landing on one of them the other numbers are guaranteed to lose.
Here is my system for what it's worth. I always play number 17, the only reason I picked that number though is because it is centrally located and easy to reach from any position. you can choose any number you wish. I bet 5 dollars a spin placing one chip on the number and one chip on each corner of my number. This give me 9 spots that can win something. If I hit right on the number every chip wins.