Cookies are not transferrable across domains; the only domain that can access the cookie is the domain that created it. This article describes solutions to bypass this limitation using Active Server Pages.
This quick and simple tutorial gives you an quick idea on how cookies are set & read by your scripts. Cookies are a quick and easy way to add any form of interaction to your site this tutorial gives you a quick 101 on how to use them in your scripts. A tutorial worth a read for both beginners and advanced.
This article will explain the problems faced with detecting cookies in ASP and address them one by one. You will then be presented with a cookie detection script written in ASP that you can use on your own site.
Cookies are a very useful; they can store usernames/password, preferences, last visits, etc. This short explains how to store information a user may type in at a typical website.
Session variables can store user-specific information for you. This tutorial explain how to configure your server and how they work (and when they don't).
Cookies can be a good method for passing data between pages and especially for retaining data between sessions. Today, it's pretty safe to assume that anyone who is using your site can use cookies, since nearly every site that is non-static makes use of them(including all ASP sites that use sessions). It is also possible to set and read cookies using client-side code, but it is a bit more difficult. Reading and writing cookies using Active Server Pages' built in Request and Response objects is incredibly easy.
This article describes three simple techniques which combine persistent cookie management and creative redirects to give users a consistent experience as they move through sites in different subdomains and domains.