Can CSS do this?

Hey all. I'm new here and semi-new to CSS. I have a site that uses a a table menu system at the top of each page. Now, I know alot of people think CSS eradicates tables, but, I'm of the opinion that they can best be used together. Anyways, is there any way that I can use an external stylesheet to insert this menu system in each page? Or will I have to do it in plain HTML? I know I can insert the content in HTML and then move it to a specified spot, like the tables do, with CSS. But, I still have to enter in all the content in my HTML. Is there any easy way around this? I hope I explained this correctly, if not, lemme know. Thanks.