Change HTML template

We have xhtml website based on template (example page [login to view URL]) We need to modify HTML code to move the middle column section (with software data) to the begining of HTML page source as much as it possible. Atleast it should be situated earlier than "featured" - right column section. These modifications should not touch the page design. For the user the visual positions of columns and other elements should be saved. We need to optimize these pages for SE so program description will be positioned in the beginning of html source as much as it possible for the robots and crawlers. These pages are dynamic and being generated by PHP engine from small parts, to get the whole page with images please use "Save page" option in browser. As the result of your work we will need the list of changes in html code to achive the goal described above and the complete modified page for preview.