Thanks for helping me!
Are you asking about changing the password you use to login to the WordPress admin
No - not the admin login in WP :-)
I'm talking about changing the DBuser password.
I know how to do it and I can change the dbuser passord in Mysql (through My PHPAdmin / or the mysql console/workbench itself) - but I do not know where to change it in WP.
So basically i goijng to change the DB user in myswl itself. that's the easy part ofr me.
1) But I do not know how to tell WP that the password has changed for the WP DBuser 2) and where that setting is in the WP file system (where the DBuser password resides).