Try it again in a Web forum.
I am currently running a website that is not using blogs, AJAX, or RSS. I update the website twice a month and it is a completely static website. It has no movement and it is inactive. I do all the HTML coding manually. Because of several keywords that I have applied, I was able to get a high ranking for it. It also got optimized recently as well. I am planning on using CMS like Joomla so I can be able to renovate my website. I am thinking of changing the sitemap, its structure, and its navigation. What I am worried about is if I redesign the website, would the ranking drop? What do you SEO professionals think about this? Will changing my website's design have an effect on my ranking?