I like the background! A couple suggestions....
- On your site, try to do something with the menu because it was annoying that it closed. Use a cookie or something to keep it open from page to page.
- On your client pages, they all look relatively similar, especiall the menu buttons. Make them look completely different, OR make the sites a network(since they share the same building, lol).
- Remove all frames. I don't use WebTV but all of my WebTV friends always complain about frames because they can't navigate them. One alternative, make a special WebTV interface with no java, no frames, no flash, and very little javascript. They don't have javascript, the have jellyscript. Similar but I know many things are not supported, probably your pop out menu.