If you have already stored your password so you don't have to type it in every time you sign on but now wish to 'unstore' it, do the following:

On Version 9.0, simply untick the Save Password box underneath your screen name and password on the Sign-On screen (before you sign on).

Alternatively, it can be done while you're signed on as follows:

1. Sign on and select Settings from the toolbar.
2. Version 9.0: Click on the A-Z tab, then click L-Q, then click Password Store.
Version 8.0 and below: Click Passwords.
3. Untick the box under Sign On.
4. Click OK.

If you wish to store your password again, simply follow the above steps, but re-tick the Sign On box in step 3. If you have changed your password in the meantime you will have to enter your new password in the box next to your screen name.