DBGrid problem - Please Help

I'm having trouble getting the contents of a table created at runtime to show in a DBGrid (called EstimateGrid). The table is being created and modified successfully, but not showing at all in the grid. Extract of code follows. Please help. Thanks.

DataSource2 := TDataSource.Create(self);
DataSource2.Dataset := Table;
DataSource2.Enabled :=True;
EstimateGrid.DataSource := DataSource2;
EstimateGrid.Enabled := True;