CurvBall,
The site is coming along nicely. As a fellow Web geek, I'd like to offer a couple minor suggestions (if I may).
1) Your main content table is set to a width of 100% but your IFRAME is set within a TD that is set to 350px. You may want to consider making both dynamic (i.e. the td width='100%') or fixing the size of both to fit an 800x600 screen. In actuallity, you should format a bit smaller due to verticle scrollbars. Personally, I have found that coding to a width of approx 750px-775px seems to fit most desktop themes.
2) In your CSS you make use of multiple 'margin' entities with all the same values. In a case like this you may want to consider streamlining your code to be:
margin: 0px;
the margin (as well as others) can have one to four values applied in this order (top, right, bottom, and left margin). If only one is present, it applies to all.
3) For your header images I notice you are using fixed spacing. If you were to make the tables dynamic, I would recommend going with percentages so that the width of the cells do not get out of whack at different resolutions. Personally, I run at 2048x1536 and maximizing the browser pulls your menu far askew from the IFRAMES. However, on the flip-side, if you code for 800x600 you can 'fix' your table at a set width and this would not happen either.
4) I am not sure if this matters to you or not but for accessibility, you should put ALT tag text on all of your images. This will help with screen readers for any who may be visually impaired and offer place holder text while images are downloading. Also, it is good practice if you want to 'add content' to your pages for search engine ranking.
5) As a final comment, you may want to investigate adding some <META> data to your header. This can help expidite rendering on some browsers and flag your content (Internet ratings) for Internet screener applications like Surf Nanny, Surf Cop, etc.
All in all, I think the work is great! Keep it up and post when you make updates. I am sure we would all love to see them. Also, if you should have any specific questions, please don't hesitate to PM me.
Best of luck!