An 'IT' company is not necessarily able to create/edit websites. I guess it is more of a watch dog, to ensure your connections inside the company and to the outer world are working.
Rex, I can see by the design, and above all by the code, that this is a very old site. Your company would surely want to appear as modern, or at least up to date, so once you get around this editing you need to do now, you ought to check what the sites of competing companies look like, and then launch into a new design. Website building isn't exactly rocket science. Here in these forums you will get all the help you need, just holler.