Site Map and index

We would like to build an attractive site map for [login to view URL] that allows viewers to quickly grasp what is in different parts of the site. It would need to be visually relevant to the rest of the site, perhaps with a thumbnail image or 1 line description of each link. Should be both artistic and user friendly. Want it to be updatable by only slightly technical administrator (me). Would be ok to use a commercial sitemap builder. Please include one (just one)sample URL of a site map you have completed. And an idea of what you would do for this site [login to view URL] Please do not write a long description of your services. Brevity please. Serious bidders only please.