Joomla/RedShop ajustment

I have designed a new Joomla 2.5 / Redshop 1.1.10 based webshop, and everything, design-wise “Mercado Template from [login to view URL]”, is almost complete, but I have some problems with php and css and module assignation. The problems I have I don´t know if this is an SQL, PHP or CSS. Problems description. 1. We have problems on checkout pages, because the below Price detail box with checkout button don’t adjust it place on page if i try to add 4 or 5 items the description box not push detail box and it overplace and cover it. 2. The detail box don’t give a “with” space for product description and in overall it not a good proportion on all labels on it. 3. I have problems to assign specific module to specific menu item. I need check the joomla, template configuration and verify it and correct this problem. site [login to view URL]