>Hi all,
>
>I have this records in a table
>
>

>+--------+-----------+---------+--------+----+
>| Art.   | Descrip.  | Pr.Unit | Quant. |Tax |
>+--------+-----------+---------+--------+----+
>  00001    ABC         12.23      2        1
>  00002    CDS          9.33      1        3
>  00003    C1           2.99      1        2
>  00004    C2           1.44      2        1
>  00005    C3           2.23      1        3
>+--------+-----------+---------+--------+-----+
>

>My question is, how can i group the (Pr.Unit*Quant)*TAX/100 for TAX 1,2,3.. and the Total Value for all TAX 1,2,3,4....

You want totals for each tax type, right? What does the field "Tax" contain; a code for the tax type?

For example:

select Tax, Pr_Unit * Quant as Total;
  from MyTable;
  group by Tax;
  into cursor Temp