I dont understand!!!

these friggin tables are drivng me insane!!!

Why is it that when i create a table with 1 row and 3 columns (each column being 200 pixels in width)...then insert a table into each column (each table being 100% in width)

It looks great BUT!!

as soon as i type in text and/or insert pictures that are larger than 200 pixels in width... The damn table grows with the text and/or picture?!?!?!

Ive searched and searched for DETAILED tutorials on page layouts with tables and nested tables but keep coming up with tutorials that do basic things like explain table rows and columns...
Im really getting frustrated with this and could use ANY help that i can get <=(

Thanks in advance to anyone who can help me