See this article will tell you about a technique through which you can make intelligent ASP.NET websites which will automatically detect the resolution of the visitor's desktop and generate a resolution optimized mark-up of a page, not forcing the visitor to keep the resolution of his/her desktop according to the website's best view resolution.
It is unpredictable for a website to be dynamic in visual appearance for multiple resolutions. Typically, graphic designers design the page graphics and the elements optimized for a certain screen resolution. Visitors having varying resolutions different from that recommended for the website will experience a less comfortable view of the pages.
Through a mix of ASP.NET and JavaScript, we can build such pages for a website which will show up according to the resolution of the visitor's PC. See this link to know abt that.
http://www.codeproject.com/KB/aspnet/DynamicScreens.aspx
Also go thr these links;
http://bytes.com/forum/thread319672.html
http://www.devcity.net/Articles/64/1/screenresolution.aspx
Best Luck!!!!!!!!!!!!!!!!!!!
Sujit.