Having problems creating WCF web service with Post command

Hello Experts,
This has been bother me for a couple days and I can't figure it out.  I am trying to create a WCF Webservice with a Post command.  This needs to except an xml as a parameter and return a string.  When I run my service in the browser i get end point not found. When I run from a test application i get "The remote server returned an error: (404) Not Found." I am really not sure what I am doing wrong or how I should be calling this service.  My code is below:

Imports System.ServiceModel
Imports System.ServiceModel.Web
Imports System.IO

' NOTE: You can use the "Rename" command on the context menu to change the interface name "IloginReq" in both code and config file together.
<ServiceContract()>
Public Interface IloginReq

   
    <OperationContract(Name:="PostSampleMethod")>
  <WebInvoke(Method:="POST", UriTemplate:="PostSampleMethod/[New]", ResponseFormat:=WebMessageFormat.Xml, RequestFormat:=WebMessageFormat.Xml, BodyStyle:=WebMessageBodyStyle.Bare)> _
    Function PostSampleMethod(data As Stream) As String

End Interface

Imports System.Web.Script.Serialization
Imports System.IO
Imports System.Xml

<AspNetCompatibilityRequirements(RequirementsMode:=AspNetCompatibilityRequirementsMode.Allowed)> _
Public Class loginReq
    Implements IloginReq
   
    Public Function PostSampleMethod(data As Stream) As String Implements IloginReq.PostSampleMethod
        ' convert Stream Data to StreamReader
        Dim reader As New StreamReader(data)
        ' Read StreamReader data as string
        Dim xmlString As String = reader.ReadToEnd()
        Dim returnValue As String = xmlString
        ' return the XMLString data
        Return returnValue
    End Function

End Class

'''Web config File

<?xml version="1.0"?>
<configuration>
  <appSettings/>
  <system.web>

    <httpRuntime requestPathInvalidCharacters="" requestValidationMode="2.0"  relaxedUrlToFileSystemMapping="true" />
    <compilation debug="true" strict="false" explicit="true" targetFramework="4.0"/>
    <!--<httpRuntime/>-->
  </system.web>
  <system.serviceModel>
    <behaviors>
      <endpointBehaviors>
        <behavior name="webBehavior">
          <webHttp/>
        </behavior>
      </endpointBehaviors>
    </behaviors>
    <serviceHostingEnvironment aspNetCompatibilityEnabled="True"/>
    <services>
      <service name="SkyTrax.loginReq">
        <endpoint address="" behaviorConfiguration="webBehavior" binding="webHttpBinding" bindingConfiguration="" contract="SkyTrax.IloginReq"/>
      </service>
    </services>
  </system.serviceModel>
  <system.webServer>
    <modules runAllManagedModulesForAllRequests="true"/>
    <!--        To browse web app root directory during debugging, set the value below to true.
        Set to false before deployment to avoid disclosing web app folder information.
      -->
    <directoryBrowse enabled="true"/>
  </system.webServer>
</configuration>