If you use Mozilla Firefox:

1. Click Tools and then Options.
2. Click Privacy.
3. Click History tab.
4. Next to "Remember visited pages for the last" enter "0" for the days.
5. Click Clear Browsing History Now.
6. Click OK.

If you use Internet Explorer and want to clear Internet Explorer history:

1. Select Tools and select Internet Options.
2. On the General tab click Clear history.
3. Click OK to erase the history.