Sound's like ITB (Runner's Knee) I personally haven't experienced it (touch wood) but my knee's do creak a bit. From what I've read on it, strength exercises would benefit you. There should be a few on the website somewhere. Anything based on hip flexors, quad and knee strength should really help. Youtube have a few good vids. I suspect the pain in your foot is linked.
You can buy support bandages/wraps for you knee as well, I've seen them in John Lewis they should take the edge off the pain when you're running. I would also suggest a foam roller to aid your stretches.
Also, please buy some new running shoes, preferably fitted at a speialist store, that would be incredibly helpful.
If none of the above works I would suggest getting your GP to make you an appointment with a physio.
Hope it gets better, it must really suck for you. Let us know how you get on.