Help with MySQL server

i’ve just installed MySQL onto my mac os x 10.2.8 system and i try to use COCOA My SQL to connect to the server so i can begin making databases…
but i can’t connect to it as it says:

Unable to connect to host localhost.
Be sure that the address is correct and that you have the necessary privileges.

is there a way where i can add a password to this account or allow myself access to my server through cocoa??

Thanks in advance for the help!:sen: