SAP Router String for .NET Connector Logon

Ive installed the SAP .NET connnector and I am trying to logon so that I can generate the C# proxies. The problem is that the SAP server that I am trying to connect to requires a SAP Router String and I can find no place to put this information on the logon form. Is there a method for doing this???

Any help that you can give would be greatly appreciated.

Thanks

Dave