Tony Cunning, infected with HIV for at least 20 years, has lived long enough to encounter another serious medical problem: kidney failure. Now the 48-year-old Milwaukee man is showing how much many doctors consider HIV, the AIDS virus, a chronic disease and no longer a death sentence. He received a kidney transplant last month at University of Wisconsin Hospital, becoming one of the stateâ??s first HIV-positive patients to get a life-saving resource once thought too scarce for them.