How to run the snapshot agent using the -PublisherLogin ?

I am Merge replicating from MS SQL Server 2000 SP4 to a MS SQL Server 2000
SP3 box.
Get the following error while running the Merge Agent:
Error Message : The process could not log conflict information.
Error Details : The process could not log conflict information. (Source:
Merge Replication Provider (Agent); Error number: -2147200992)
Could not find stored procedure ''.
(Source: <publishing servername> (Data source); Error number: 2812)
On the Microsoft support website
http://support.microsoft.com/default...b;en-us;308743
it says this happens when 'If Merge Replication is configured so that the
Snapshot Agents connect to the Publisher by using a login that is defined as
a member of db_owner (and not a system administrator) in a database that is
merge published, if conflicts are detected during the Merge Process the Merge
Agent fails with this error message'
They offer a workaround which is :
To work around this behavior, run the Snapshot Agent with the
-PublisherLogin parameter and specify a login. For example, use the sa login,
which is a system administrator on the Publisher to generate a new snapshot.
After the snapshot completes, SQL Server creates the conflict stored
procedure. Then, you can rerun the Merge Agent so that SQL Server can log the
conflicts. Because you are not reinitializing the subscription, SQL Server
does not apply the new snapshot to the subscribers.
How do I run the Snapshot Agent with the -PublisherLogin parameter ?
On your publisher server there's a job which creates the snapshot. The
name of the job varies but you can recognize it by the category
REPL-Snapshot.
When you open the properties of the job, go to to Steps tab and edit
the "run agent" step by adding the parameter.
M