Deploying WCF services

Hi,
I created a WCF service consumed by a silverlight project. The service , silverlight and the webapp all are in same solution. I deployed the service, the web.config, .svc files and the bin directory. My web.confog contains the following configuration for services and securtiy.


<behaviors>
<serviceBehaviors>
<behavior name="MyServiceBehavior">
<serviceMetadata httpGetEnabled="true" />
<serviceDebug includeExceptionDetailInFaults="true" />
</behavior>
</serviceBehaviors>

</behaviors>

<services>
<service behaviorConfiguration="MyServiceBehavior" name="XYZ.Services.Service1">
<endpoint address="" binding="basicHttpBinding" bindingConfiguration="MyBasicHttpBinding"
name="Endpoint1" contract="XYZ.Services.IService1" />
</service>

<service behaviorConfiguration="MyServiceBehavior" name="XYZ.Services.Service2">
<endpoint address="" binding="basicHttpBinding" bindingConfiguration="MyBasicHttpBinding"
name="Endpoint2" contract="XYZ.Services.IService2" />
</service>

</services>


<binding name="MyBasicHttpBinding">
<security mode ="None">
<transport clientCredentialType="None" />
</security>
</binding>

when i try to access the service, i got the error " Security settings for this service require 'Anonymous' Authentication but it is not enabled for the IIS application that hosts this service. "

then i changed the binding configuration in web.config as

<binding name="MyBasicHttpBinding">
<security mode="TransportCredentialOnly">
<transport clientCredentialType="Windows"/>
</security>
</binding>
when i try to access the service, its prompting for username and password.

Please let me know, whenther I have to change the authentication for this service as "Anonymous" or for windows authentication, why its asking for username and password. What code changes I should do to acces this service without giving username and password? Please help