As soon as anything is for video, the price doubles!

Sennheiser do a support system which is excellent but it's (in my opinion) outrageously expensive.
The best (value for money) windshield is definitely the softie from Rycote. It costs about £150 for a rubber handle/support and a furry foam cover. According to their publicity, it's just as good as a "Zeppelin" costing three times as much and will outlast your camcorder. My experience is that it does just what they claim. I have a battered old "Zeppelin" and the Softie is just as effective in the wind as the airship.

http://www.rycote.com/products/softie/index.asp

As for a boom (some anal-retentives will insist on calling it a fishpole but it's all the same thing) There are all sorts available, most of which seem excessive for what is, in effect, a plastic tube. One of Videoforums' Moderators, Alan Mills (a K6/ME66 user) built a boom out of a carbon-fibre fishing rod which seems to be a lot better than my "proper" aluminium boom which cost damn near a hundred quid!