You might want to try awua therapy for a while - swim! That way when you exercise, your knee wont have the added weight or pressure on it while you do stregthen it. Also, try working out in warm water, like in a heated pool or even do leg exercises in a hot tub. Arthritis foundations worldwide have programs called "Joints in Motion" and they offer free classes and such to arthritis sufferers. You might want to check into them for lists of where you can go.
As for the Glucosamine, I would stay away from it. Back in January, I was misdiagnosed. They thought the nodes in my hand were something else than arthritis and when I started reading up on this "wrong disease" I read alot about Glucosamine and how it CAUSES nodes and lumps because it has a high concentrate of collegen and when your body absorbs too much of it, it can be harmful. So in my opinion too, Id NOT use it.
Ive tried a cream called Arnica Cream. You can buy it at a healthfood store and rub it where it hurts. Oriental medicine uses it alot and so do athletes for achey/bruised/swollen joints. I find it helps for a while. Also, have you tried Theragesic? Its a heating cream that works so well! On my most stiff days, I find that applying this on my sore spots does help take the edge off.
If your medicine isnt working though, Id speak to your Rheumatologist about perhaps trying another medicine or adding one to your regime. No one wants to live in pain. You shouldnt have to either.
Hang in there!
Meg