title: Visual Studio 2008 Project Properties Build Configuration Missing Options
body: <p>I have a strange problem, and hopefully someone can help me.</p>
  
  <p>I have a solution with 13 separate C# projects. I am using Vista x64 to develop on, and I would like to build these projects to target the x86 platform. This is normally quite easy. I can go to solution properties -> Configuration properties and change the platform to x86. The strange part here is that 3 of my projects refuse to allow me to select x86. </p>
  
  <p>So, I thought I'd go to each of these 3 projects separately and change it in Project Properties->Build and change the Platform. And the Configuration and Platform dropdowns are not there for these projects. I googled around a bit, and found a setting in Tools->Options->Projects And Solutions->Show Advanced build configuration. After selecting this, when going to Project Properties for the offending projects, I now see both dropdowns, but the platform only lets me select Active (Any CPU). </p>
  
  <p>I can also not change the Platform in Solution properties to x86 for these projects.</p>
  
  <p>Any ideas?</p>