1.Click the Tools menu.
2.Select Delete Browsing History .
3.Click the Delete forms button.
4.Click the Yes button in the confirmation window.
5.Click the Close button.
Alternatively, you can delete individual entries from your search history by using the Down arrow key to highlight a previous search, then pressing the Delete key.
for other browsers u can get a detailed version by visiting this link : http://www.google.com/support/websearch/bin/answer...