Choose Tools, Internet Options, Settings, View Files.
You'll get a windows explorer window come up. Click the 'Internet Address' header twice (or until the arrow points upwards), then look for the file that starts with cookie: and has www.deardiary.net in it. Select the file, delete it. You shouldn't see the stale cookie problem on deardiary.net again.

Thats the theory anyway.

Good luck if you use Netscape - its been so many years since I used Netscape I couldn't begin to tell you how to do it - perhaps some kind soul will post a comment with how its done :-)

Steve.