Boot into single user mode

[Mr. Bravismore Mumanyi]

Dear All,

I lost root password for one of my box running Fedora 9. I am not sure 
if its one of the clever users who changed the password since I had not 
locked it down.
I am now trying to boot into single user mode in order to reset the 
password. However, at the Fedora Splash screen the system does not 
respond to any key "a" for me to boot into run level 1. Is it a 
configuration that has been tempered with?

Regards
/Bravo