facing problem regarding url redirection

[videos]

Hello friends

i am facing problem in my site
now i have a site with static pages
i want to make it by using Content Management System (CMS) but the
site which is running now having good pagerank and crawled in google

kindly tell me can i redirect each url of the site having more the
600
pages to their corresponding new url, will google crawl it

or i need to down the the old site and uplad the new site made by CMS

or i will redirect new site with the old home page

kindly help me i am very confussed