title: Register COM reference to 64-bit Windows 7 machine
body: <p>I am writing a C# program that interface with COM object through COM interop.</p>
  
  <p>I have a third-party program that register itself as the COM server when I execute the Application. This works fine in 32-bit Windows Vista and I can interface with the interop just fine. (The reference show up in "COM" tab from Visual Studio when you click "Add Reference")</p>
  
  <p>However, the reference does not show up in "COM" tab on my 64-bit Windows 7 machine after I execute the application. Any thoughts, why would this happen? I actually tried using regsvr32.exe to register the application manually but it didn't work either (error message saying "entry-point DllRegisterServer was not found)</p>