Under the Options menu, select Network Preferenes. When the Preferences window appears, select the Protocols tab. To disable the cookie warning, uncheck the box next to Show an Alert Before Accepting a Cookie.

Under the Edit menu, select Preferences. This will bring up a window with some categories listed down the left side of the window. Select the category Advanced. Then, in the right side of the window, select the option for cookies that you want: to turn them on, select either Accept all cookies, or Only accept cookies originating from the same server as the page being viewed.

To turn cookies off, select Do not accept or send cookies.

Under the View menu, select Options. When the Options window appears, select the Advanced tab. To disable the cookie warning, uncheck the box next to Warn before accepting cookies.