It's possible for FormsCentral web-based forms to accept attachments. The field type is "File Attachment" when you are adding fields to your form. Attached files can then be downloaded from the response table as needed. Is that what you mean?
Thanks Brian. Not really. I have sent an online form with an attached pdf version of the same form. Someone replied sending the completed form as an attachment and I now have their answer on the pdf form. I was just wondering whether I can upload the answers in the response box or I need to do it manually. I hope my question is a bit clearer now.