I recently added membership, accounts, login, etc. to the AspDotNetMVC site. While doing so I decided I wanted to support OpenID, too. However, I didn't want to go with only OpenID because I needed ASP.NET Membership in place to work in conjunction with another application, a Kigg site used as a service for rating content on the AspDotNetMVC site. I could have probably converted the Kigg code base to use OpenID but I also wanted to allow people who may not have OpenID to create traditional accounts on the site without signing up for OpenID. Following are the steps I took to implement an OpenID login and integrate it with "traditional ASP.NET" membership. Follow these six steps and you can do the same.