8779 Organize site/keep pageranks

I need to reorganize a website that is fairly large. It has several PR 6 pages and alot more PR 5 pages and PR 4 pages etc. I need to redesign the site with easily updatable ssi files or something that works similar allowing me to update the entire site by changing a single file to change ads or something etc. There are a couple of different designs on the site currently. The oldest design is seen here [login to view URL] It uses some ssi etc to update the header,menu footer etc somehow The newer design is this [login to view URL] The design we would like to go with is the main page on the domain. This is also the ads/google id etc that we want to use throughout the site instead of the stuff shown on the other 2 pages. This page is not included in the zip file of the site [login to view URL] I would send you a zip file with the entire site and you need to make all the changes modifications upload to one of your servers and go thru each page to make sure it is all updating/working correctly. I would also like to verify it on your test server well. The goal of this restructuring is to make the site easier to update and to get the entire site fluent with the same design without sacrificing any of the current search engine rankings. The new format/design will need to keep current google rankings in mind, such as Keeping all the same filenames Making sure the content isnt altered or scattered around too much SEO of the pages are entact, and/or optimized Keeping the site structure 100% entact so as not to affect current rankings in search engines Finished statich html code will need to be compliant html code Please make sure you can meet all of the requirements