Basically last night i spilt a bit of tea on the keyboard and it worked fine but this morning my C, X, S, W and Z keys dont work anymore. now i cant login to my mac at all because i need the C button for my password. I cant boot from disk and change the master password cos the C dont work. If i plugged in an external keyboard, would the laptop recognise the keyboard before it gets to the login screen as obviously i cant login so i wouldnt be able to do any configurations for a keyboard? I am letting it dry out now and hope that works as i'm out of warrenty for my macbook.