Create your Gmail Signature
Click the "Preview" button below to start creating your Gmail signature.
Click the "Copy Signature" button to save the signature content to your clipboard.
In Google Mail, go to your mail settings page, scroll down to the signature box and delete any content there. Paste the signature from the clipboard (Ctrl/Cmd-V), then save the settings. Your new signature should now work.
Note: you'll need to have rich text formatting enabled in your Gmail 'Compose' settings. More information about Gmail signatures can be found in the Google Help site.