Help with creating a template!!

I am currently trying to create a blog for my website. Since i currently have a content based website, i am using dreamweaver to edit it so i already a template i use throughout my website. I have been trying to convert my blank template to a wordpress theme for some time now. I have split it into the 4 sections and put all the necessary code in for wordpress, but i still get the error “The package could not be installed. The style.css stylesheet doesn’t contain a valid theme header.” Someone please help. To see my current blank theme look here.