Wheels for tires

I really need someones advice on what size wheels I need for my 99 Jeep Cherokee 4x2. I am going to be getting 235/75R15 tires and I have no clue as to what size wheel(rim) I need. I am in Germany due to the military and it's kinda hard just to go ask someone at a tire store. I have the stock tires and wheels and I would like to upgrade to something that looks a little sportier. If anyone could give me some advice or help, it would be greatly appreciated. You can reach me at [email protected]