Problem with keyboard and mouse

I am rookie to OS X, I played more with IOS.

Two days ago I installed iDeneb 10.5.7 on EEEPC 900HA. I did upgrade to 10.5.8 using Delta.
I did updates and configuration and everything went pretty well (less sleep - wake from sleep and full shutdown, and the sound was distorted). However, these things were not too much important for me.
(Chameleon V2, Darwin)

I don't know what kext I installed (or what settings I did), but I ended up in a situation where I do not know what to do.
If I let normal boot, the interface is loaded, but the keyboard and mouse are dead.

I can enter boot options but later, at prompt, the keyboard is dead and I can't do anymore.

What can I do to fix this?

Thank you!