just replace the top banner name with the same name as the already made...here is an example... go to your folder like this:
C:\Server\htdocs\themes\awebcms_dark\images\logo
and replace logo2.jpg with you own banner... remember to name it logo2.jpg so it REPLACE the original one and thats all... other way you can do it is editing the HTML where it says something like this:
Code:
echo "<a href='".BASEDIR."index.php'><img src='".THEME."images/logo/logo2.jpg' alt='' title='".."'></td>";
that is located in you httdocs here is the full path:
htdocs\themes\awebcms_dark
hope that helped you