Jamal,
my first thought is that the password you are providing for the 'sde' user (geodatabase administrator) isn't working. If the sde login already exists on this server, the password you provide must match that of the existing login. If the sde login doesn't already exist and the tool creates this login, then the password must meet the password policy being used by SQL Server. You can find more information on the password policy here: http://msdn.microsoft.com/en-us/library/ms161959.aspx
-Shannon
Many thanks Shannon for the help,What�??s confusing here that we are required to enter our password without being asked to confirm it and thus may easily forget what we have entered before.On the other hand, in the sql one is asked to confirm this password[ATTACH=CONFIG]21420[/ATTACH]BestJamal
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Jamal Numan
Geomolg Geoportal for Spatial Information
Ramallah, West Bank, Palestine