Signature, avatar image, etc. can be set in your Control Panel. See the User CP button top left below the title of the thread, click on it & you will see options on left side of your control panel window.

Signature is automatically added to all your posts unless you click the option at bottom of post not to show signature.

eg: my penguins is an avatar image.

lt quit right away after appearing on the desktop, cluttering it up with the installer, which l can et rid of, and LW, which l'll do away with after you or some one, shows me it'll never work.