I found numerous ways to create tables with rounded corners, as I discovered when I built
this page.
They mostly involved creating 3x3 tables with gifs for each corner. I tried various different methods for creating the verticle and horizontal lines such as css, gifs and <td bg>. This was just the method I found to work best for me.
If you are saying this method is flawed, and is the main cause of my collapsed tables I will happily try it your way. Are you saying that if I use coloured transparent gifs inside the <td> tags instead of <td background..> then my tables will be structurally stronger??