401 Unauthorized reading file from UserControl

All,

I have a Windows Control Library, that I have imbeded into a web page. It
works great, with one exception. The control is to read a tif file for
display. The tif file is on a web server. I am using the following code:

Dim img As New
Bitmap(Image.FromStream(System.Net.HttpWebRequest.Create(tifURL).GetResponse().GetResponseStream()))

This results in the error:

"System.Net.WebException: The remote server returned an error: (401)
Unauthorized. at System.Net.HttpWebRequest.GetResponse() at
ImgViewer.Viewer.Viewer_Load(Object sender, EventArgs e) in
C:\teva\ImgViewer\Viewer.vb:line 12"

All I could find in help was to add this code, but it has no effect.


Dim myRegEx As New
System.Text.RegularExpressions.Regex("http://<myServer>/.*")
Dim myWebPermission As New
System.Net.WebPermission(System.Net.NetworkAccess.Connect, myRegEx)
myWebPermission.Demand()

Any help would be appreciated!!

Thanks,
Jeff