What CMS are you using? some use templates stored in the server that can be modified. Some might be tweaked using CSS only, so you can edit and change the CSS sheet to do changes (maybe).

Also, some such as wordpress (whos modus operandis I happen to dislike) use templates distributed in "modules" sort of... which means there is no single template file, instead, several files with php and html mixed (header, footer, content, sidebar, sidenotes). Its kinda complicated the first time.

It could help knowing the cms you are using. Also, check on google "modifying templates for XXCMS" (your cms). There are tutorials on this for every major CMS out there. Good luck

__________________
La Ruta Maya, My journey across Mesoamérica.
Guatemala Guides My trips around Guatemala.