Hi Cathe & Ladies! My co-worker just sent me an email telling me she's starting to develop osteoarthritis in both of her knees. Her doctor has recommended that she start off with aerobics. I'd like your advice as well as my educated crowd out there as to which video she should start off with. I thought maybe The Wedding Video. Do you still sell it? And should she be starting off with step videos at all? Your thoughts please! Thanks a bunch, Kathy