Use ActiveDirectory:
System.DirectoryServices

************************************************** **

DirectoryEntry obDirEntry = new DirectoryEntry("user
identity string");

System.DirectoryServices.PropertyCollection coll =
obDirEntry.Properties;

object obVal = coll["FullName"].Value;
string str = obVal.ToString();





>-----Original Message-----
>Hi,
>
>
>
>Does anybody know how to best identify users of a domain
and automatically log them in to a ASP.NET application?
>
>
>
>Thank you!!
>
>
>
> Daniel
>