What method do you use to deploy ASP.Net applications to the wild?

Currently we deploy compiled ASP.Net applications by publishing the web site locally and emailing a zip file to the system administrator with a (usually) lengthy set of instructions for deployment. This is because the first time we deployed an ASP.Net application to a customer the dev and test IIS instance were the same, and we were unable to deploy the site twice to the same machine. This set the tone for deployment on all subsequent projects.