Hi,
You will need to first of all add the Comments field to the Leads database. You can do this by going to Users -> Leads -> Properties and choose add a field.
Then you need to add the field to the forms, so probably admin_leads_detail_form.html and lead_edit_form.html so that users and admins will be able to see the comments.
Then on the web based form that leads will opt in to just add the field <textarea name="Field_Name" rows=5 cols=40></textarea>
Where Field_Name is the exact name that you gave to the comments field, case sensitive.
Mel
Mel Goulet
Developer -
Gossamer Threads, Inc.