Table sizes are stretched out when opened in any browserexcept explorer

[gdsandman]

I am working on a site and pretty much have everything lined out and loads the
table dimensions and everything else just the same as it is created in
dreamweaver. The problem that I am having is that when the site is opened in
any other browser the tables are off or spread out of position. Is there
something that i can do to change this so the site is uniform to more browsers
than just Explorer? the site is [url]www.greendiamond.mygoldenopportunity.com[/url] which
is a test site that i am using to prepare this site. Could there be a problem
with the host as well?

i have seen other posts that are similar but it is still unclear about how to
fix this problem

[gdsandman]

i didnt seem to mention that the problem lies in my abrasive and foundry pages
under the product menu. its mainly dealing with the table that the main text is
in. its hieght is stretched out giving too much white space. but still looks
good in explorer.