header graphics

Hi ya, am looking for a site that has graphic headers for hosting companies to use. Something related to either hosting or web design.. have checked out alot of the "gif" sites, and not what I really want, and don't know if there is such a site out there. If anyone knows of some, would apprecitate the url. Needs to be a graphic to stretch across the top of page, hence the term header graphic.. lol.. thanx in advance...