Question could not load file or assembly 'interop.shdocvw version 1.1.0.0' error

[chidambaram]

I'm using ShdocVW.dll in my solution. Its 1.1 versioned dll. While I'm running my application thru Debug->sample.exe its working fine. After that i created setup and installed. But when i click my exe thru installion it gives the following error Message:
" Could not load file or assembly 'Interop.SHDocVw, Version=1.1.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified.
File name: 'Interop.SHDocVw, Version=1.1.0.0, Culture=neutral, PublicKeyToken=null' "

I took the SHDocVw.dll from C:/WINDOWS/System32. Please help me. I'm badly in need of this. Thanks in advance.