Yikes... here's what I'd do:
Learn HTML. <table> is for displaying tabular data... it is NOT the swiss army knife of HTML that can be nested a hundred times in order to create a layout.
Learn CSS. This one sort of goes hand-in-hand with the above bullet item, but it's definitely a beast of its own.
Make sure you've completed steps 1 & 2 by validating yourself.
At present, you're not doing too well:
http://www.triadhighlanders.com/ -- Result: 48 Errors, 8 warning(s)
As for why you can't see the current jumbed mess of tables->tables->more tables->iframe->invalid HTML document... for starters, the <center> element in 'mail3.htm' has a width of 0 when viewed from the index.
(And you should be able to see this, too, by using the DOM inspector/tool in your web browser.)