Registration page content not visible

Hi

i have implemented registration page and role based authentication as it is described in this tutorial:

http://aspsnippets.com/Articles/Implement-Role-based-security-Page-access-and-ShowHide-Menu-items-based-on-Role-in-ASPNet.aspx

As i understand the role based authentication only signed in users are able to see the sites. how about unsigned users?

the content of my registration site is only visible to logged in users. how can i change this that the content is visible to unsigned users?

my web.sitemap file looks like this: 

tanks!

<siteMap xmlns="http://schemas.microsoft.com/AspNet/SiteMap-File-1.0" >
  
  <siteMapNode url="" title="Home"  description="Home" roles="*">

    <siteMapNode url="~/Sites/Register.aspx" title="Registration" description="Registration" roles="*"/>
    <siteMapNode url="~/default.aspx" title="Home"  description="Home" roles="User"/>
    <siteMapNode url="~/Sites/Order_Computer.aspx" title="xx"  description="xx" roles="User"/>
    <siteMapNode url="~/Sites/Order_Printer.aspx" title="xx"  description="xx" roles="User"/>
    <siteMapNode url="~/Sites/Order_User.aspx" title="xx"  description="xx" roles="User"/>
    <siteMapNode url="~/Sites/Admin/Reporting.aspx" title="Reporting"  description="Reporting" roles="Administrator"/>
    <siteMapNode url="~/Sites/Admin/Administration.aspx" title="Administration"  description="Administration" roles="Administrator"/>
    
  </siteMapNode>
  
</siteMap>