How do you integrate .gifs into a sig?

So confubling

</div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE </td></tr><tr><td id='QUOTE'>For the curse seal i dunno about that animeniac did that </td></tr></table><div class='postcolor'>

Only because you told me to