WCF on Sandbox...Proper URL?

[trioadvisor]

My sandbox is located at:

http://user439.netfx4lab.discountasp.net

I put the WCF dll files in the user439/bin directory and the SVC files in the user439 directory.

When I type

http://user439.netfx4lab.discountasp.net/Access342Services.UserAuthentication.svc

in the browser it comes up "not found."

What is the proper format for the URL so I can see the WSDL request?

[bruce]

the error indicated that you have not properly setup a http handler in your web.confgi.

[trioadvisor]

Same web.config as my production site....please explain further.