BrowserHawk is a powerful server-side component that integrates into existing classic ASP and ASP.NET sites in just minutes.  It is very easy to use, and with just a few lines of code you can detect just about any browser and system settings you need to ensure your web site functions as intended.

BrowserHawk is a very mature product and has been around for nearly a decade now. My real-world testing of the product has shown that it works great. I highly recommend giving it a try and seeing just how much more powerful and elegant BrowserHawk is compared to any home-grown browser sniffer you may be using, and its advantages over ASP.NET's Browser.Request object.