I don't know how to help you with #2 but I can help with your #1.
The administrator account (called root) needs to have a password set. So open up a command line Konsole window or just go to the K menu and then Run and type konsole & hit enter. At the command prompt type su followed by 1 dash:
Code:
su -
Then type:
Code:
passwd
Enter a new password and then enter it again to confirm it. Type exit and then type exit again. Now the root account's password is set to whatever you entered.