QUOTE(rosfrog @ May 14 2009, 10:52 AM)

If you've only been playing a few weeks, there's a very big change that the bowing issues and sound issues are down to you rather than your bow or rosin - it will get better as you practise - bowing is something you'll still feel like you haven't mastered in ten years time!
Yes, that's what I was thinking.
Still, if you're getting a dusting of frost on the body of your instrument from rosin, then you are indeed over-rosining and need to do it far less. One quick go with the rosin once a week (or less often) for a beginniner is quite enough. There should be none visible anywhere on the violin, except on the strings you've been playing. Won't hurt to get that right either!
Allan's right though - bowing will get better with practise and always ask your teacher who can comment on your progress and playing before asking on-forum, 'cos we can't see you and s/he can!