How do i change username/pass on MySql ?

[infernal]

I have problems starting my own server.
I used Jezebell's Guide which was very easy to use.
But i do have a problem, and when i run boot5zones.bat, it brings up the 6 windows with all the same error:....


<prev txt here>.........
[Error] Loading npcs FAILED!
===============================
Runtime errors:

MySQL Error #1405 or $2001 means your mysql server rejected the username and password you presented it.
For more information on this error, visit http://www.eqemu.net/eqemuerror.php?id=1

Hit any key to exit



.... Well The website link does not work and i am not sure where i can change the username and pass for this...

Also, Which username pass do i use? A new one? the EQemu server username pass? and which one is causing the error?