Форма регистрации пользователей, находим:
Code
<tr id="siM64"><td class="manTdBut" colspan="2" align="center" id="siM65"><input class="manFlSbm" id="siF20" type="submit" name="sbm" value="$SUBMIT_SIGN$" /></td></tr>
И меняем на:
Code
<tr id="siM64"><td class="manTdBut" colspan="2" align="center" id="siM65"><input class="manFlSbm" id="siF20" type="image" src="http://studiomax.ucoz.com/iload/b40488ba800e0280c3ce23caed311c8e.jpg" name="sbm" value="$SUBMIT_SIGN$" /></td></tr>
