Css file problem

I have a problem with themems. I have an app_themes folder in my application that has a mytheme folder. In this folder I have placed the css file. I have used this theme through the app. using web config file .... follwing is the code.

<System.web>

<pages theme="mytheme"></pages>

</System.web>

      

        
        
        
      

    

it worikng fine..but problem tht i dont want htis topic on a specific page.

for this i used

Enablingtheme ="false"

in pagedirective.but, but it still applies to the page.

Please suggest me something ...

thanx in advance .. ...