Internet Explorer 6

1. Selct the Tools menu and click Internet Options and select the General tab.
2. To delete all cookies, in the Temporary Internet Files section, click Delete Cookies and press OK.

Firefox 1.5

1. Select the Tools menu and click Options (may also be under Edit -> Preferences depending on your version) and select the Privacy button.
2. Select the Cookies tab.
3. To delete all cookies click the Delete All Cookies button.

Opera

1. Select the Tools menu and click Delete Private Data and click the Details button.
2. If you wish to keep things such as history, saved passwords, cache, etc., uncheck those items and click Delete.