Removing White Space on Sidebar-less Page

Ok, I know people have asked over and over, I have read an hours worth of post already! I simply just want to widen my content area on my page template now that I have taken the sidebar out. I have made a new div (different name)and put in my proper width, replaced div id=”content” in the template page with my new div. However, when I load it up it hasn’t excepted the changes and the source shows it still using div id=”content” and not my new div id=”pcontent”. Any help? if I use fire bug and change content to pcontent it takes effect so it is in the style sheet….