Problem 'Microsoft.ReportViewer.WebForms, Version=9.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'

I have problem when deploy from development to production server.
The problem is "Could not load file or assembly 'Microsoft.ReportViewer.WebForms, Version=9.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies." in the web.config. For your information i was installed .NET Framework 3.5 because I am using visual studio 2008.
But the project not running well and then i googling ahah i got the clue from a blog.

He said please download for ReportViewer.exe
http://www.microsoft.com/downloads/details.aspx?FamilyID=CC96C246-61E5-4D9E-BB5F-416D75A1B

problem solve