code:
switch (Contact.Email)
      {
        case "xxx@yyy.zzz":
          run(ChatWnd, Message);
          break;
        case "xxx2@yyy.zzz":
          run(ChatWnd, Message);
          break;
      }
Cases fall through y'know:
code:
switch (Contact.Email)
      {
        case "xxx@yyy.zzz":
        case "xxx2@yyy.zzz":
          run(ChatWnd, Message);
          break;
      }
is equivalent.
Remember: there's no compiler to optimise scripts 
