Magento template tweaks (part 2)

Template changes: On individual product page(s), the bottom tab navigation (for product attributes) needs to be moved over and located directly underneath the product information. Currently, the layout is a 2-column with left bar (navigation on the left, product info on the right). However, the product attribute "block" isn't located in the product description area like it should be. Instead, that "block" acts like a separate 1-column layout, which is forcing its position too far down the page. It's very easy to see what the problem is -- just look at any product page and you'll see what I mean. Multiple stores: There are several domains located on this server which are going to use the same Magento installation. I need Magento to be configured for a multiple store set up using those URLs.