I believe you can tell Access that the default driver is Access by putting a semicolon in front of the connect string.
Dim tdfLinked As TableDef
Set tdfLinked = dbsTemp.CreateTableDef("Table")
tdfLinked.Connect = ";Database=c:\mybase.mdb"
tdfLinked.SourceTableName = "TableName"
CurrentDb.TableDefs.Append tdfLinked
Richard