cannot run sample project

[niwat]

Help me please. I have tried to run a sample but i got an error like this.

Server Error in '/' Application.

---

Configuration Error

Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately. 

Parser Error Message: Could not load file or assembly 'System.Web.Mvc, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.

Source Error: 

Line 28: <add assembly="System.Web.Abstractions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> Line 29: <add assembly="System.Web.Routing, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> Line 30: <add assembly="System.Web.Mvc, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> Line 31: <add assembly="System.Data.Linq, Version=3.5.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" /> Line 32: </assemblies>

Source File: C:\Program Files\Telerik\Extensions for ASP.NET MVC Q3 2010\Examples\Telerik.Web.Mvc.Examples\web.config    Line: 30 

Assembly Load Trace: The following information can be helpful to determine why the assembly 'System.Web.Mvc, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' could not be loaded.

[Vinkel]

The error says that you do not have MVC 2 installed or not reference System.Web.MVC dll in the project. Please fix it.

-J

[niwat]

hello Vinkel
I have tried to reinstall MVC but it still have a same error.

Error 1 Could not load file or assembly 'System.Web.Mvc, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified. C:\Program Files\Telerik\Extensions for ASP.NET MVC Q3 2010\Examples\Telerik.Web.Mvc.Examples\Web.config 30

Could not load file or assembly 'System.Web.Mvc, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified. C:\Program Files\Telerik\Extensions for ASP.NET MVC Q3 2010\Examples\Telerik.Web.Mvc.Examples\Web.config

My OS is windows vista ultimate with visual studio 2008.
Do you have another suggestion?
Thank you