How do I clear an entry from AutoComplete?

Clarifications

To delete AutoComplete history in Internet Explorer 7.0:
? Select "Tools"
? Select "Internet Options".
? Open the "General" tab.
? In "Browsing history" area click the "Delete" button.
? In "Delete browsing history" window, to clear AutoComplete, click "Delete forms" button and then click "Yes".

To clean AutoComplete history in Internet Explorer 6.x:
? Select "Tools"
? Select "Internet Options".
? Open the "Content" tab.
? Click the "AutoComplete" button.
? Click the "Clear forms" button to clear all AutoComplete form data and/or click the "Clear Passwords" to clear restored passwords.

In Firefox:
Go to the Tools menu
Select Clear Private Data
Make sure Saved Form and Search History is checked. Uncheck others as you wish.
Click on Clear Private Data Now and your search history is cleared.

Type the first couple of letters so that the entry you want to remove appears, now use the arrow key to select the entry. Press Del.