The site looks nice, with no tacky, flashy graphics to distract from the all important thing - the content (which is informative and concise - a good thing).
Personally, I don't like the way the menus expand & collapse - with the few 2nd-level items you have, I'd have them showing all the time.
The text on the site does not scale at all in IE6, and doesn't handle too well when it does in Firefox (or almost all other browsers, possibly). This suggests you are using pixel sizes for your fonts, instead of a scalable unit such as EMs. I'd ask in the HTML/CSS forum (forum215) for more on this, or read up on accessibility guidelines which usually go into detail on this.
I'd ditch the table you've used for layout, as with the simple design, you could easily achieve this with CSS, to make for a more SEO friendly, accessible, and portable site.
There are a few other validation errors, such as on the contact page. You can see more here:
I'm not sure why you say you wont fix the URL - it's not hard... simply replace all the "&" characters with "&". They will still look and function perfectly well in any browser, and will also pass validation. You're so close, you may as well go that last extra bit.
There are many pages missing a DOCTYPE (see validation errors in link above), and so cannot be validated.
Hope this helps,
Dan
Coedit Limited - Delivering standards compliant, accessible web solutions
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