How to remove something from the sidebar on a single page

Hey,

Ok, so if you want to add something into the sidebar on wordpress like the archives bit for example, then you can add this before the code:

<?php if (is_single()) { ?>

Then the archives bit will only show in the sidebar on the single page and won’t show on pages like the index etc.

But I want to remove something from the single page in the sidebar, so for example; the archives bit will show in the sidebar on every page, but when we get to a single page, it disappears.

Hope you all understood me :p

Thanks ??