VB Forum / Win API / June 2008

I have an app (VB6 of course) that, among other things, downloads some
data from SQLServer. This is an in-house only application. The user
has to log in to access the server data but all users use the same
login ID.

I have some code in the program that makes a record of the fact that
the user has done a down-load and, to make it unique for each user, I
am reading a UserName from the registry on the user's computer.
(from: HKCU\Software\Microsoft\Office\9.0\Common\UserInfo)

Unfortunately, as I've just discovered, this registry entry does not
exist on everyone's computer.

So, my question is: what registry entry should I read that would yield
a unique identification of the user (or his computer) that I can count
on being there on every computer (they're all running Windows XP).

Maybe his log-in name? Or the computer name?

Any suggestions?

Thanks.