I mistakenly took my account off of the access list for my internal hard drive in Sharing Prefs in System Preferences and now my MacBook Core Duo 2.0 GHz with 512 MB RAM will not boot up past the blue screens. I've tried resetting the password with the install DVD and also the account's accesses and permissions with the install DVD, but no such luck. Any way to fix this? I tried to enable the root account, too, but I'm not really sure how to do that. All I did was reset its password. I really need this to work! Help.