Install IIS 7 on window server 2003

Hi All,

I am facing with a problem.

I have installed IIS 7 on window server 2003.
 When i am clicking on IIS appliction then i am getting this error message:

Could not load file or assembly 'Microsoft.Web.Administrator, Version=7.0.0.0,Cluture=neutral
,PublicKey Token=31bf3856ad364e35' or one of its dependencies. The system cannoty find the file specified.

Please suggest me , how this issue will fix?

Thanks 
Viky