How to remove 'description' block of the forums at Home Page ?

[Lynne]

Look in your page source and find the template name around the part of the code you want to edit. It should look something like this:
<!-- BEGIN TEMPLATE: template_name -->

That is the template you want to edit. And I would guess if you want to remove the description, you would remove something that says "description" in it. I don't know the exact code since you didn't post the name of the template you are wanting to edit.