Windows Logins + Basic Authentication = error

[Greg Hurlman]

My set up:
Windows Server 2003/IIS 6.0
Project Server 2002 + patch for Server 2003

I've got Project set to only allow Windows logins, and it works like a champ
using Windows Integration/Kerberos authentication. However, I have done the
following to allow for Basic Authentication (we have a few users who can't
do kerberos)

- Added basic auth to the security settings for the ProjectServer directory,
along with msadcs.dll in the MSADC virtual directory. (using local users for
now, so I've got the local server name set as the default domain/default
realm in IIS)
- Added lgnbsc.asp to the default document settings for the ProjectServer
directory.

Now, whenever we try to log in, we get redirected to lgnps.asp, and see the
following error:

You have entered an incorrect user name/password combination. (5002)

IIS authenticates the user ok, as the dialog box for Basic Authentication
pops up only once.

What on EARTH do I need to do to get this to work?

Please copy my email address in your replies; just reverse the username &
domain to get the correct address.

Thanks,
Greg