7
Look at your theme.html file under your theme. Hold on.... In your case look at: /themes/imago06c/theme.html
In that file you should see a line with <{$xoops_banner}>.
If you changed it to:
<{if $xoops_isuser}><{$xoops_banner}><{/if}>
The ads will then only be seen by registered and logged in users. You have to set the admin option to notice that change but you likely know that one if you've worked on the theme already.
To further complicate matters you could also:
<{if $xoops_isuser}>
<{$xoops_banner}>
<{else}>
some other html/image code for anon users
<{/if}>
