I have an Option Name "Size", and I also have a ton of option "values"

I would like to do a bulk import of these attributes and create them as well, and update all the pricing/weight.

I used easy populate to import the products, and it worked great. When I look at the attributes export file, it doesn't make a lot of sense and I can't seem to draw the correlation of where it pulls and maps the product model to the attributes, even though I only have 1 product that I actually setup, but it shows all products..

Has anyone done an easy populate import and creation of option values with product price/weight??

Also I don't need to use easy populate. I can just write a PERL script to do it directly into the DB.

I'm looking at tables..

products_attributes
products_options_values

are these the only 2 tables?