Sorry for the delay in replying, guys.
I tried what you suggested but what happen is that if I boot my laptop, it will stop in linux mint bootsplash. i can press ctrl-alt-f1 to log to a terminal but what i would like is to automatically see a text console login.
I read http://www.unixmen.com/linux-tutoria...inux-runlevels
and since Ubuntu is based in Debian, I assumed that Ubuntu also uses the same runlevel for 2-5. I did try init 2 to init 5 but nothing happens. Only when typing init 1 and init 6 will work to change the run level(of course using sudo).
I installed rcconf but when i try to run it, gdm is already disabled.
Is there another way for me to have the text console login in linux mint 9? thanks in advance.