What's an easy way to set up a WAMP test environment?

http://www.wampserver.com/ offers a solid, with a simple setup consisting of a single install wizard. It is NOT hard enough for a production environment, but it’s fine for testing or internal sharing.

http://www.uniformserver.com/ is orientated towards production environments, but has not been updated for a quite a while as of the writing of this article (though it is once again an active product).