Redirecting

Hi all the problem that i am having is that the user is not being
authenticated:

my code:

Dim methods As IStateNames =
CType(XmlRpcProxyGen.Create(GetType(IStateNames)), IStateNames)
Dim nc As NetworkCredential = New NetworkCredential("username",
"password")
methods.Credentials = nc

when i try to access the methods the server will not allow me to do it
and redirects me to the login page.

can anyone help please.