ya, i would chose a low impact form of cardio..eliptical, stair climber, even a brisk pace on the treadmill on an incline..anything to eliminate the jarring impact your knees are taking. possibly some swimming if you are comfortable in water.. especially untill the knee pain subsides.. as far as wrapping, that can be effective for knee support during heavy leg training, but trying to wrap, or use some kind of compression for your knees during cardio for any duration would be pretty uncomfortable, and hamper circulation..cutting the nolva, eliminating or cutting back on the running, should help considerably..plus some new kicks..