I have several web pages containing tables, for which I'd like to have line-borders around the tables and the cells. In fact, some of these pages existed for several years already, and rendered acceptly in IE6, IE7.

We switched about 6 months ago to a completely different set of style sheets to change our site look and feel. We also switched to "modern" browsers such as IE8 (and because I couldn't stop Vista) to IE9.

Now the borders don't render at all.

I spent a day fighting with this about a month ago, and failed to fix it. It seemed that I could reduce the page down to just the barest table and IE8 would still not render the border. I think I decided IE8 was just buggy, but I'm not an HTML expert so it is more likely that I'm buggy. (I'm just getting back to this; I'll go see if I can find that reduced page).

Here is one such page:

http://www.semdesigns.com/products/DMS/DMSComparison.html

The tables should be obvious; you can tell them by their absence of lines :-{

The URI validates using the W3C service as HTML 4.01 Transitional.

Any suggestions?