Si, il web.sitemap esiste: il codice è questo: (Ps: ma devo modificare sempre da Visual Web Developer?)
<?xml version="1.0" encoding="utf-8" ?>
<siteMap>
<siteMapNode title="Home" url="Default.aspx">
<siteMapNode title="Resume" url="Resume.aspx" />
<siteMapNode title="Links" url="Links.aspx" />
<siteMapNode title="Details" url="Admin/Details.aspx" />
</siteMapNode>
</siteMap>