258684 Revamp current web site

I am interested in redoing our website from a store bought site to something much more professional and attractive looking but I want to have a wysiwyg editor capability to allow me to make content changes to my site on the fly. My current site is located at [login to view URL] and was built using website tonight from [login to view URL] in order to put something up quick. I want to keep my logo and build the site around the logo and those colors. I have an administrative back end that we need a user name and login field for on the home page.