Theme

I would like to know how can I change a theme dynamically.
Thank You very much for help in advance.:)

Go to msdn.con and download one of their templates. The list is here:
http://msdn2.microsoft.com/en-us/asp.net/aa336613.aspx

The "Personal Design" template supports themes. You download the template, it "installs itself" into visual studio. You then create a new web site, using that template. It creates all the files and is runnable right there. You click on the little icon, it changes the theme right then. It even uses "profiles" to remember users choices.

You can look through all those files and learn quite a bit.

Shouldn't take more than a few hours, and you'd know exactly how to do it.