Configuration Error in Web.Config

I am using 1.1 for development.  I am not sure about the production site,  I have had many problems with my config files.  My predesessor has put web.config everywhere in the app.  Please help me with 1.1

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
      <appSettings>
            <!-- <add key="ConnectionString"

            <add key="MgrRole" value="Division Manager" />      
            <add key="FinRole" value="Financial" />      
            <add key="LocalPath" value=" />
            <add key="FolderPath" value="" />
            <add key="WSSPath" value=" />
            <add key="IPsolutionVersion" value="1.0.0.117" />
            <add key="IPsolutionVersionUpdate" value="1.0.0.56" />            
            <add key="IPproductVersion" value="11.0.5531" />
            <add key="IPPIVersion" value="1.0.0.0" />
      </appSettings>
      <system.web>

            <!--  DYNAMIC DEBUG COMPILATION
                  Set compilation debug="true" to insert debugging symbols (.pdb information)
                  into the compiled page. Because this creates a larger file that executes
                  more slowly, you should set this value to true only when debugging and to
                  false at all other times. For more information, refer to the documentation about
                  debugging ASP.NET files.
            -->
            <compilation defaultLanguage="vb" debug="true" />

            <!--  CUSTOM ERROR MESSAGES
                  Set customErrors mode="On" or "RemoteOnly" to enable custom error messages, "Off" to disable.
                  Add <error> tags for each of the errors you want to handle.

                  "On" Always display custom (friendly) messages.
                  "Off" Always display detailed ASP.NET error information.
                  "RemoteOnly" Display custom (friendly) messages only to users not running
                  on the local Web server. This setting is recommended for security purposes, so
                  that you do not display application detail information to remote clients.
            -->
            <!-- enable custom errors for the application -->
            <!-- <customErrors mode="Off" defaultRedirect="ErrorPage.aspx" /> -->
           
                       
            <configuration>
                  <system.web>
                        <customErrors mode="RemoteOnly">
                  </system.web>
            </configuration>
           
            <!-- Sageer changed this line from Shawn to Sharieff -->
            <identity impersonate="true" />
             
            <!--  AUTHENTICATION
                  This section sets the authentication policies of the application. Possible modes are "Windows",
                  "Forms", "Passport" and "None"

                  "None" No authentication is performed.
                  "Windows" IIS performs authentication (Basic, Digest, or Integrated Windows) according to
                  its settings for the application. Anonymous access must be disabled in IIS.
                  "Forms" You provide a custom form (Web page) for users to enter their credentials, and then
                  you authenticate them in your application. A user credential token is stored in a cookie.
                  "Passport" Authentication is performed via a centralized authentication service provided
                  by Microsoft that offers a single logon and core profile services for member sites.
            -->
            <!--
            <authentication mode="Forms">
                  <forms name=" " loginUrl=" " protection="All" path="/" />
            </authentication>
           
            -->
   
            <!--  AUTHORIZATION
                  This section sets the authorization policies of the application. You can allow or deny access
                  to application resources by user or role. Wildcards: "*" mean everyone, "?" means anonymous
                  (unauthenticated) users.
            -->
             
            <authorization>
                  <allow users="*" /> <!-- Allow all users -->

                        <!--  <allow     users="[comma separated list of users]"
                                                roles="[comma separated list of roles]"/>
                              <deny      users="[comma separated list of users]"
                                                roles="[comma separated list of roles]"/>
                        -->
            </authorization>

            <!--  APPLICATION-LEVEL TRACE LOGGING
                  Application-level tracing enables trace log output for every page within an application.
                  Set trace enabled="true" to enable application trace logging.  If pageOutput="true", the
                  trace information will be displayed at the bottom of each page.  Otherwise, you can view the
                  application trace log by browsing the "trace.axd" page from your web application
                  root.
            -->
            <trace enabled="false" requestLimit="10" pageOutput="false" traceMode="SortByTime" localOnly="true" />


            <!--  SESSION STATE SETTINGS
                  By default ASP.NET uses cookies to identify which requests belong to a particular session.
                  If cookies are not available, a session can be tracked by adding a session identifier to the URL.
                  To disable cookies, set sessionState cookieless="true".
            -->
            <sessionState
                        mode="InProc"
                        stateConnectionString="tcpip=127.0.0.1:42424"
                        sqlConnectionString="data source=127.0.0.1;Trusted_Connection=yes"
                        cookieless="false"
                        timeout="20"
            />

            <!--  GLOBALIZATION
                  This section sets the globalization settings of the application.
            -->
            <globalization requestEncoding="utf-8" responseEncoding="utf-8" />
             <pages enableSessionState="true"/>

      </system.web>
 
  <location path="default.aspx">
        <system.web>
            <authorization>
                <deny users="?" />
            </authorization>
        </system.web>
  </location>

</configuration>

Thanks guys.  My subsription to Experts-Exchange has already been paid off.

Sageer