2 questions please

Hi,

I would like to put a little mpeg movie (to use with Windows Media player)
onto our website.
I have a 6GB AVI file (captured from my MINI DV camera) here. What program
converts this file to a small mpg file for website purpose?

Secondly- I have a web camera near the beach and would like to upload live
shots onto our server for live viewing.
Are there any specific programs to use or what would be the best option?

Thank you for any help.