.net – How to detect if another assembly is available to the application or not

I have a command line winforms executable that calls into a Windows winforms application.

Occassionally Ops forget to include the windows exe with the command line exe when deploying the application, leading to an error.

How do I gracefully handle that and show a nice error instead of:

Unhandled Exception:
System.IO.FileNotFoundException: Could
not load file or ass embly 'MyappFoo,
Version=5.1.4303.0, Culture=neutral,
PublicKeyToken=null' or one of its
dependencies. The system cannot find
the file specified. File name:
'MyAppFoo, Version=5.1.4303.0,
Culture=neutral, PublicKeyToken=null'
at AppFoo.Program.Main(String[] args)

WRN: Assembly binding logging is
turned OFF. To enable assembly bind
failure logging, set the registry
value [HKLM\Software\M
icrosoft\Fusion!EnableLog] (DWORD) to
1. Note: There is some performance penalty associated with assembly bind
failure lo gging. To turn this feature
off, remove the registry value
[HKLM\Software\Microsoft\Fus
ion!EnableLog].

Edit:

To clarify a bit, how do I intercept the FileNotFoundExcception, when

static int Main(string[] args)
{
   try
   {
      Console.WriteLine"MyPhooApp Command Line (c) PhooSoft 2008");
   }
   catch (System.IO.FileNotFoundException fe)
   {
      Console.WriteLine("Unable to find foo.exe");
      return -1;
   }
}

doesnt writeln either.