Hmm,
It seems I introduced some sql in recent versions that is not compatible with SQL 2000. I'm sure there is a way to modify the SQL so it can work but I don't currently have a machine setup to test MS SQL 2000. When I get a chance to set one up I will take a look at this.
In the meantime since you already have MS SQL 2000 installed, one option, if you have SQL skills is to edit the sql to make it compatible. If you do this and send me the modified scripts I will integrate them.
The scripts are located at /Setup/applications/mojoportal-core/SchemaUpgradeScripts/mssql
You can start with the one its complaining about, 2.2.8.7.cofig file, paste it into query analyzer and see if you can re-work the syntax to something that does the same thing but works with SQL 2000.
Hope it helps,
Joe