title: How to change Compiler Option in Visual Studio 10?
body: <p>I tried to run my application and got this problem: </p>
  
  <blockquote>
    <p>Could not load file or assembly 'Interop.ComUtilitiesLib'</p>
  </blockquote>
  
  <p>After googling around, I found a way to fix that issue by changing the compiler option.</p>
  
  <p>However, I really don't know how to change the setting of compiler options (in the project properties) to explicitly produce an "x86" (i.e., 32-bit) app.</p>
  
  <p>What I see then view the project's properties were just: " Application, Build, Build Events, Debug, ... etc". Just the Compile Options disappears.</p>