You have different ways to manage cookies, depending on the settings of your internet browser.
In Internet Explorer, click the Tools button, then click Internet Options. On the General tab, under Browsing History, click Settings. Click the Show Files button. Click on the Name column header to sort all files alphabetically, then scroll down the list until you see files beginning with the prefix “Cookie”. (All cookies have this prefix and usually contain the name of the website that created the cookie). Select the cookie(s) with the name “Oliver List” and delete themClose the window that contains the file list and double-click OK to return to Internet Explorer.
Go to the “Tools” tab of the browser and select the “Options” menu. In the window that appears, choose “Privacy” and click on “Display cookies”. Locate the files that contain the name “Oliver List”. Select them and delete them.
In your browser, choose Edit menu > Preferences. Click Security. Click Show Cookies. Select the cookies that contain the name “Oliver List” and click Clear or Clear All. After deleting the cookies, click Done.
Click on the Tools menu icon. Select Options. Click on the Advanced Options tab and go to the “Privacy” section. Click on the Show Cookies button. Locate the files that contain the name “Oliver List”. Select them and delete them. Click “Close” to return to your browser.
On the CNIL website: http://www.cnil.fr/vos-droits/vos-traces/les-cookies/