First advice I'd have is to check out the shoes you are wearing? Are they old? Have they lost their support? Do they need replacing? Think of shoes as shock absorbers for your body. If they aren't up to scratch the rest of the 'machine' won't work accordingly . Get fitted from a place like the Athletes Foot or similar to make sure the shoes are most suitable for you.

Another tip is maybe start taking Glucoscamine - it helps with your joints and elliviates pain and aches too. Best to take it daily for maximum effect.

I would also recommend going to a physio who would be able to check to make sure there aren't any other underlying problems with your 'alignment'. They can also give you some exercises specific to strengthening the little muscles, so often missed in usual training sessions. They may even recommend and show you how to strap you knee in the meantime.

HTH!