Shawn,
Here is what I found - there is not much there...;

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/netdir/adsi/iadswinntsysteminfo.asp

Properties
The IADsWinNTSystemInfo interface defines the following properties. The preceding table includes access methods for these properties.

Properties Description
ComputerName Retrieves the host name of the computer.

DomainName Retrieves the domain name the user is on.

PDC Retrieves the name of the primary domain controller to which the host computer belongs.

UserName Retrieves the name of the user account under which the method is called.

Windows NT/2000/XP: Included in Windows 2000 and later.