I am reposting this since I cannot understand why no-one (ESRI staff) has any answer. I have also included the WMS acronym in the title hoping that this may catch someones eye!
"We are attempting to connect to the WMS servcies from an OGC compliant server and cannot access its secured data. It has a simple User/Password system but there is no part of the API I can find to effect this.
Clearly this is supported by all other ArcGis products and I was wondering if there is either a technique for enabling this or whether there are any plans to introduce this desirable feature in the near future? - Oh, and why was it excluded?"
If anyone can help this would be great since otherwise we will have to search for another Viewer SDK