ASP.NET Terminal Server Client IP

I need to track a client local IP or NIC card that accesses our ASP.NET 1.1 application from a terminal server session such as Citrix or Microsoft. Users may access a web page from within a terminal server session and the current application will only show the ip address on the server and not the remote client. I need to always know who the end user is that is accessing our web application. We use currently use [login to view URL] to get the users ip. I would prefer bidders that could provide IP as well as NIC card serial information. ASP.NET Framework 1.1, VStudio 2003 using VB.NET code. ## Deliverables I am able to test code from multiple computers, terminal sessions and browsers.