Can not delete data from View

I have a view is made from three tables by UNION ALL.
When I tried to delete some records by using 'Delete from My_New_View_2004..
.', I get error:
Server: Msg 4440, Level 16, State 9, Line 1
UNION ALL view is not updatable
Why and how to fix this problem so I can delete data from view?
Thanks for help.
-GeorgeA view containing a UNION is not updateable unless it can meet the criteria
for a Partitioned View. See the Partitioned Views topic in Books Online for
details.
David Portas
SQL Server MVP
--|||"David Portas" <REMOVE_BEFORE_REPLYING_dportas@.acm.org> wrote in message
news:sICdnfm2y_xb7_7dRVn-ig@.giganews.com...
> A view containing a UNION is not updateable unless it can meet the
criteria
> for a Partitioned View. See the Partitioned Views topic in Books Online
for
> details.
Alternatively, if you are running SQL 2000 you can have an INSTEAD OF DELETE
trigger that deletes from the underlying tables
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