Conditional question - how to make something NOT show up only on the main page?

[styleforum]

I have a strip of ads that I have set up with conditionals so they change based on what forum you're viewing. I want a default set to show up on search results pages, but I think it would look cleaner to remove them completely from the main forum home view. I imagine I can enclose the whole section in an <if> statement that should do this, but I don't know what the if statement should be exactly.

Basically,

<IF [current template/page] !==[the main home page one]>
(ad stuff)
</if>

How would I write this properly?

Thanks.