Portfolio Server Attribute Mapping Configuration Problem

[sbendigo]

When configuring Attribute Mapping in the Project Server Gateway section
of the deployment guide I get an error when I try to add a Mapping Template
and select the Gateway that I setup.
"The request failed with HTTP status 401: Unauthorized."

I look at the event log on the Project Server and it shows the following
in the Application Log:

Event code: 4007
Event message: URL authorization failed for the request.
Event time: 4/8/2008 11:51:40 AM
Event time (UTC): 4/8/2008 3:51:40 PM
Event ID: 4a652b2929944166abdcf2d4e01e90b9
Event sequence: 4
Event occurrence: 3
Event detail code: 0

Application information:
Application domain:
/LM/W3SVC/1720207907/root/SharedServices1-1-128521373974599504
Trust level: Full
Application Virtual Path: /SharedServices1
Application Path: C:\Program Files\Microsoft Office
Servers\12.0\WebServices\Shared\
Machine name: <MACHINE NAME>

Process information:
Process ID: 2016
Process name: w3wp.exe
Account name: <DOMAIN>\<SERVICEACCOUNT>

Request information:
Request URL: http://<URL>:56737/SharedServices1/PSI/Authentication.asmx
Request path: /SharedServices1/PSI/Authentication.asmx
User host address: <IP ADDRESS>
User: <DOMAIN>\<COMPUTERNAME$>
Is authenticated: True
Authentication Type: NTLM
Thread account name: <DOMAIN>\<SERVICEACCOUNT>


Is this an NTFS permission error or does one of these accounts need access
to something else?

Thanks,
Scott