css and resizing

I admit I'm certainly no CSS guru, but I think I have this page looking
fairly good.  Then it hits me, I'm gonna have to test this in Netscape 4.x,
it turns out in Netscape it looks like the computer just vomited the page
out to the screen.  Is this fixable, at least to a level where it would be
"readable" in NS4.X. 

Also, the page does not display properly unless it is in a maximized window,
I know this is CSS related but do not know how to fix it.

Thanks,
Mark

I've attached the XHTML file, the CSS is included in the file.