Creating new wysiwyg editor

Hi,

I have created a website using the pac_bikestore template.

And I want to create a new wysiwyg editor, to load information a different place that there already is.
Does anyone know how I can do that.

If I for instance just copy and paste this:
<tr>
<td><?php echo $entry_description; ?></td>
<td><textarea name="product_description[<?php echo $language['language_id']; ?>][description]" id="description<?php echo $language['language_id']; ?>"><?php echo isset($product_description[$language['language_id']]) ? $product_description[$language['language_id']]['description'] : ''; ?></textarea></td>
</tr>

I will be able to write in it's not an editor like the other ones, do I need to change something on more pages or can anyone help me with what to do?

Thank you