Tivoli authentication, webservices and .Net

[Francois Vanderseypen]

We have a single-sign-on Tivoli authentication system
with various ASP.Net application and webservices.

Accessing the webservices requires authentication from outside.

How can one programmatically pass credentials when requesting a
webservice? I tried via the standard 'Credentials' and
'CredentialCache' mechanism but no success.

[Tivoli v4.2 with custom CDAS, Windows 2K, Net 1.1]

Help is appreciated even if your/the context is a bit different,
Tivoli and webservices support is hard to find.

Thanks a lot!