is there a program that will take my html and...

[vistadude]

...convert into a html that it fallows a separate css file?

[onelesshero]

Not sure if I understand what your asking but most programs will allow you to attach or link the css style sheet often named style.css to any html document. I use Microsoft Expression which is the successor of Microsoft Frontpage one of the easier to use editors. Download your trial here:

http://www.microsoft.com/expression/products/overview.aspx?key=web