Submitting Form Data

I have a php script that performs a query and then dynamically builds a section of a page for every row returned. Each section has some fields and three submit buttons. My problem is this. If I make a change to one particular section, how can I submit the form passing only the relevant section data? **************************************************** This e-mail is intended for the recipient only and may contain confidential information. If you are not the intended recipient then you should reply to the sender and take no further ation based upon the content of the message. Internet e-mails are not necessarily secure and CCM Limited does not accept any responsibility for changes made to this message. Although checks have been made to ensure this message and any attchments are free from viruses the recipient should ensure that this is the case. ****************************************************