<add key="SWHT\Connection" value="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|\SWHT.mdb"/>Here is what I use for the local development in app.config of the business object.
<add key="SWHT\Connection" value="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\DevelopWebs\SouthwestHomesTyler\SouthwestHomesTylerWeb\App_Data\SWHT.mdb" />>