How do you get rid of session ID in ASP.NET URLs?

I am developing a Website using ASP.NET and noticed that the session ID always shows up in the URL as in the following example:

http://localhost/Website/(d4asqa6wfsqdhmacnjbgbd55)/abc.aspx

How can I make it so that the URL would not include the session ID? The URL should then appear like:

http://localhost/Website/abc.aspx

It looks like session state is set to use querystring. This can be casued by cookieless=true being set in the web.config file. Look for the following in your web.config:-

<sessionState mode="InProc" stateConnectionString="tcpip=127.0.0.1:42424" sqlConnectionString="data source=127.0.0.1;user id=sa;password=" cookieless="true" timeout="20" />

and change cookieless to false.

Thanks!