Enabling Root Account!

I'm running a system on Ubuntu 7.04 and I need to be able to login as root to access a drive. Is there a way to enable the root account that would be easy for a newbie?

Root account activation

I hope this would be useful:http://www.manishtech.info/2007/07/21/enabling-root-login-in-ubuntu/

That URL is no longer valid.

That URL is no longer valid. Can you please post the steps? I need to change permissions and can only do it as root. Sudo does not always work. I tried to give my admin account permission and sudo failed. Thanks.