Sorry I can't be much help but here are the links for those that might help you (these forums screwed the links up).
http://www.cecvp.com/index.php?/plain/accessories/cable_assemblies/169500_series http://www.cecvp.com/index.php?/plain/sensors/velocity/4_102_4_103_vibration_transducer
The page is working fine in FF 1.5. I am not sure what problem you have with the tables. The tables itself look fine to me, on the second page the table is just to big for the surrounding design. But to fix this you would need a new header which is suitable for a webpage with more width, so this is definitely a matter for your designer/webdeveloper.
With all respect, I never would have bought this worthless cms were it not for the dsesigner I hired and now hes left me in the cold with a piece of crap site I can't even fix. So if anyone here could please take 10 fricking minutes to help me with this issue it would be just great, OKAY??? PLEASE???????????
It is near impossible for someone without access to your site and without you having debug or similar turned on so we know which template is being used to display the table.
Basically what is going on is that the template being used to display that table is not limited to the correct number of columns (or not limiting the number of columns at all).
You need to find the override template that is being used to display the table (it should be under design/override) and edit that template to limit the number of columns to 6. Alternatively, so it won't affect other tables, create a new override for that node with 6 columns.