How do you syncronize your login password and keychain password

Hello,

Keychain Access asks for keychain "login" after changing login password...

http://support.apple.com/kb/HT1631

Resetting your keychain in Mac OS X...

If Keychain First Aid finds an issue that it cannot repair, or if you do not know your keychain password, you may need to reset your keychain.

http://support.apple.com/kb/TS1544