Why do I have to enter my password when I boot up my IMAC?

Not too long ago I had to reset my password for my IMAC using the install DVD. Now eveytime I boot it up I have to enter my password, before it just booted up. What do I need to do to have it just boot up w\out having to enter my password?

Thank you

Are you saying that you can not reboot the machine without first entering a password, or that you have to enter a password after the machine boots so you can use OS X? If the later, go to System Preferences, Security & Privacy, General Tab, and remove the check where it says: "Require Password......"

If that's not what you're referring to, post back and clarify.