Physical Therapy Page

I have pain in my right shoulder for a long time now. Also, when I move my arm my rotator cuff makes an audible grinding/popping noise. Any type of overhead exercise for shoulders, and even chest exercises, are extremely painful. Anything that rotates that joint causes too much pain. I had an xray, and will have an MRI later this month, before returning to the doc to see what the problem may be.
In the mean time, what can I do at the gym, other than cardio, to stay in shape? I can do leg exercises, bicep/tricep, back, and abs, just fine. I need something for chest/shoulders. Any suggestions?