Web content

I am starting a new business selling high quality DVD's to niche markets. So this is my first website to sell my front end product. I have already written 12 pages of copy, What I would like is for you to make the writing more professional as I have never done this before and if possible extend the copy by as many more pages as you think relevant. I have a back end product already lined up to go out a few weeks after this project so for me this is the start of a lot of copywriting and am therefore also looking for someone to work with in the long term.
Thanks