How to ad text on main page of phpld?

{if $category.ID == 0}
This is the description of my homepage. I can even include html.
{/if}

Note:the above code works, but the only problem is this added text also appears when using the search function from the home page.

or:

{if $category.ID == 0 and not ($p or $q)} This is the description of my homepage. I can even include html.{/if}