New to Linux

[Mera Mottaleb]

Hi,

This is my first time ever using Linux. I have just installed Fedora 
Core 2. During installation, I put in the password for the admin using 
the number keys on the right, with the num lock key on.

After installation when I try to login using the username: 
administrator and the password I created, with the num lock key on, I 
get a message saying that user name or the password is not correct. By 
the way I tried it with the num lock key off too.

This was my second installation. First time when I had the same 
problem, I thought I had put in the wrong password, so the second time 
when I installed it, I made sure that I was using the right password.

Is it possible to change the admin password or to do anything that will 
prevent me from reinstalling?

Thanks
Mera