changing password for login page

Hi, I am new at this and am trying to change the password for some of the clients in the database.
I am using the script as follows.
update authuser set passwd=ralph where id=2;
This brings back an error
Unknown column 'ralph' in 'field list'
can someone tell me what the proper syntax is.

Try

passwd = 'ralph'

hello frnd

see if it works....

as the password is stored in the encrypted format so...try this:
update authuser set passwd=password('ralph') where id=2;