Proxy property of the HttpWebRequest

I've had problems getting through the http proxy where I work at the moment, but I got excellent help from Luke Hutteman, the author of the RSS Aggregator SharpReader. It all works fine now:

...

Dim webReq As HttpWebRequest = CType(WebRequest.Create(url), HttpWebRequest)

Dim newProxy As WebProxy = New WebProxy(host,port)

If username.Length = 0 Then

Else

   Dim cred As New NetworkCredential(username, password)

   Dim credCache As New CredentialCache

   credCache.Add(newProxy.Address, "Basic", cred)

   credCache.Add(newProxy.Address, "Digest", cred)

End If

newProxy.BypassProxyOnLocal = True

'some proxys need this too

Dim objResponse As WebResponse = webReq.GetResponse

...

Something like that :)