Open the mojoportal.sln file in VS 2005.
Branch down the references node under the mojoPortal.Business project and make sure it has a reference to the correct data layer for your needs. I usually check it in configured for mojoPortal.Data.MSSQL (Microsoft SQL Server) but you can easily change this. Delete the reference for mojoPortal.Data.MSSQL, then right click the References node and choose Add Reference. In the dialog,click the Projects tab and choose either mojoPortal.Data.pgsql, mojoPortal.Data.MySql and click OK
