How Can I Find Blank Password Logins In SQL2000???

Hi everyone ,
i am trying to find logins which has blank password in SQL2000 . i wrote cursor to find these logins. But i cannot catch the logins.Beacuse sp_password sistem procedure does not return @@ERROR.

I can easily do it with SQL2005 (BEGIN -TRY -CATCH).

How can i catch sp_password error in SQL Server 2000??
or are there any suggestions to find these logins.
How can i find blank password logins in SQL2000???


sp_password '','','loginname'

select @@error ''' it is always ZERO





Declare @sql as varchar(255)

Declare @login as varchar(50)

Declare Cur_Login CURSOR scroll FOR

Select name from syslogins where isntuser=0

open Cur_Login

fetch next from Cur_Login INTO @Login

WHILE @@FETCH_STATUS = 0

begin

set @sql = 'sp_password '''','''',''@login'' '

set @sql = replace(@sql ,'@login',@login)

exec (@sql)

if @@ERROR <> 0

print 'Password is not blank'

fetch next from Cur_Login INTO @Login

end

close Cur_Login

deallocate Cur_Login