>>Michel, in one of my forms I work with 3 instances of the same table open with different aliases in DE, I do this in DE BeforeOpenTables, (or DE Init()) like
>>this.Cursor3.CursorSource="myTable.dbf".
>>(In my case it is a little more complicated, because I add function to define path to currently selected company data files).
>
>Have you tried using the visual interface of DE to add 3 tables? This is where it doesn't open additional instance of the same table.

Yes, that's how I do this. It opens table windows, as, for example:
myTable, myTable1, myTable2. I found that often you should scroll DE window to see those new instances.