[chamberinternet]

I guess this is possible.

You can add come smarty code within the product detail page template with something like this (not tested):

{if $product.categoryid eq xxx}
<a href="http://store.mountainmagic.com/tent-information.html">How to choose a tent</a>
{/if}

xxx is the id of the category which you can find from within the admin area of the store.

Hope this helps...

Regards

Shafiq :sK