ASP.NET / AJAX Rewrite project

The site code is written in ASP.NET, not ASP. Here's what I need: The site is very large with hundreds of thousands entries in the database. Currently, the structure goes [login to view URL] for the majority of the listings (I will PM more detail). The urls are modified in the [login to view URL] to have [login to view URL] This results in duplicate page of every single page. In other words, search engines index both the [login to view URL] page and [login to view URL], even though those are the same pages. What I need: I want someone to do 301 redirects of all of the [login to view URL] files to [login to view URL] files, thereby eliminating the duplicate problem. I need an experienced ASP.NET / AJAX progammer! I am not sure if you need to use the [login to view URL] file or the [login to view URL] file for rewrite, but you need to be very knowledgable with the languages. You will not get any access to the site. I will e-mail you the code, which you will then modify.