Create a SharePoint Application Page for Anonymous Access

http://dishasharepointworld.blogspot.com/2011/07/how-to-create-sharepoint-application_1072.html

 

http://blog.concurrency.com/sharepoint/allow-anonymous-access-to-sharepoint-application-pages-in-the-_layouts-directory/

 

http://blogs.msdn.com/b/zwsong/archive/2010/04/29/creating-a-sharepoint-2010-application-page-for-anonymous-access.aspx