Ash, whatever you do, stick at it. I don't like hills either, although they are only really aproblem if you are running against the clock. he technique for hills is to shrten your stride, lean into the hill and swing your arms. Consentrate on your breathing, nice deep breaths. I read somewhere that breathing out every 4 to 5 paces equates to an easy pace, so regulate your speed so thatyou can achieve that sort of breathing pattern.
Running down hills can be hard on the knees, but again, try leaning forward but lengthen your stride. You are probably trying to slow your self too much.
Stick with it, it will get easier.
Good Luck
jenks