When surfing the net, websites will leave little bits of information, known as cookies, stored on your PC. These cookies allow your browser to remember your login details or site preferences. It's very easy to enable and disable them. We've already shown you how to do it in Firefox 5, but it's slightly different to implement in Internet Explorer 9. Here's how.
From the Tools menu located at the top right-hand corner of the browser window, select Internet options.
Click on the Privacy tab and then press Advanced.
Check the box under Override automatic cookie handling and then make sure Accept is selected for both First-party cookies and Third-party cookies. Press OK to apply the changes.
If you want to disable cookies, simply select the block option rather than Accept.