Hi Sebastian,
To insert the ad code you will need to edit the template file.
So, for example if you are using the Monobook skin, you would edit this file:
/skins/MonoBook.php
As you wish to use the 120 x 240 banner in your sidebar, please look for this code, which corresponds to your search box:
<div id="p-search" class="portlet">
<h5><label for="searchInput"><?php $this->msg('search') ?></label></h5>
<div id="searchBody" class="pBody">
<form action="<?php $this->text('searchaction') ?>" id="searchform"><div>
<input id="searchInput" name="search" type="text"<?php echo $this->skin->tooltipAndAccesskey('search');
if( isset( $this->data['search'] ) ) {
?> value="<?php $this->text('search') ?>"<?php } ?> />
<input type='submit' name="go" class="searchButton" id="searchGoButton" value="<?php $this->msg('searcharticle') ?>"<?php echo $this->skin->tooltipAndAccesskey( 'search-go' ); ?> />
<input type='submit' name="fulltext" class="searchButton" id="mw-searchButton" value="<?php $this->msg('searchbutton') ?>"<?php echo $this->skin->tooltipAndAccesskey( 'search-fulltext' ); ?> />
</div></form>
</div>
</div>
Directly under this, copy and paste:
<div id="p-wikkiiad" class="portlet">
<h5>Ads</h5>
<div class="pBody">
BANNER AD CODE GOES HERE
</div>
</div>
This will create a seperate box where the banner ad is shown.
If you need any more clarification do please let me know
