indexes

Hi!
I try to optimize following query 
SELECT DISTINCT e1.name_ent AS nazwa_grupy
FROM ent e1, binds b1, ent e2
WHERE e1.id_ent=b1.id_parent AND b1.id_child=e2.id_ent AND b1.id_links=0
AND e2.name_ent='SERWIS';

Is it possible to get better results? From explain notes it looks, that
engine uses indexes on ent table, but I can't constrain it to use any
index on binds table - this causes main problem.
Or may be query should look in other way?

EXPLAIN gives following information:
NOTICE:  QUERY PLAN:
Unique  (cost=77.02 size=0 width=0) ->  Sort  (cost=77.02 size=0 width=0)       ->  Nested Loop  (cost=77.02 size=1
width=28)            ->  Nested Loop  (cost=74.97 size=1 width=12)                   ->  Seq Scan on b1  (cost=72.97
size=1width=8)                   ->  Index Scan on e2  (cost=2.00 size=1 width=4)             ->  Index Scan on e1
(cost=2.05size=1304 width=16)
 

and I have following indexes
Table    = ent2_idx
+--------------------+--------------------+------+
|Field               |Type                |Length|
+--------------------+--------------------+------+
| id_ent             | int4               |4     |
| name_ent           | text               |var   |
+--------------------+--------------------+------+

and 
Table    = binds2_idx
+--------------------+----------------------------------+------+
|Field               |              Type                |Length|
+--------------------+----------------------------------+------+
| id_parent          | int4                             |4     |
| id_child           | int4                             |4     |
| id_links           | int4                             |4     |
+--------------------+----------------------------------+------+

TIARem

-------------------------------------------------------------------*------------
Remigiusz Sokolowski      e-mail: rems@gdansk.sprint.pl           * *        
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