Connecting to a WSE 3.0 security enabled web service with .Net 1.1

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I have created a WSE 3.0 security enabled web service using a custom username
token manager. Everything is working properly when I consume this web
service with a WSE enabled client application. I am able to execute the web
methods and return the data as needed.

However, I also need to be able to provide information on how to connect to
this service with a .Net 1.1 application. I do know that WSE 3.0 doesn't
support .Net 1.1, but it should still be able to connect and run the web
methods. This is where I am stuck at. I am unsure about how I need to
modify the soap header to be able to provide the needed credentials that as
used by the custom username token manager.

I have tried, without WSE 3.0 in the project, adding the credentials to the
web service proxy. That didn't work. It still produces the below error:

Microsoft.Web.Services3.Security.SecurityFault: Header
http://schemas.xmlsoap.org/ws/2004/08/addressing:Action for ultimate
recipient is required but not present in the message.

So does anyone have any type of examples on how to connect to the WSE 3.0
web service WITHOUT using WSE on the client side?

Any pointer in the right direction would be very much appreciated.