different sidebar blocks usergroups

[kh99]

Is your ad block a custom block with html? Then what you can do is create a new template, and copy the contents of the block_html template to your new template. Then add a conditional around the entire contents of your new template like:

<vb:if condition="!$show['member']">
rest of template here
</vb:if>

Now edit the ad block and enter your new template name in the "Template to Use" field.