I need to get some xml from a content provider of ours, but I also need to
to set windows credentials to do it...

Usually I would just do it like this

System.Xml.XmlDocument myXMLDoc = new XmlDocument();
myXMLDoc.Load(this.strXMLPath);

where strXMLPath is my URL.

Now im sure you can do it, just not sure how exactly so any help would be
appreciated :)

Regards
Nicolai