Layout issue

Hello there,

I’m having some troubles trying to display correctly both the catalog and the product page.

First of all it seems that the content is always displayed below the categories’ menu instead of on its right.
(Screenshot)

Then, in the product page, the categories menu and the pictures of the product are displayed above the text and outside the normal box that contains the page’s content.
(Screenshot)

I’m not quite sure where i should go to solve this issue. Is it in the syle of the plugin or of the theme I’m using?
Anyone can help?

Thanks a lot!

http://wordpress.org/extend/plugins/wp-catalogue/