Hi Bashira,
You don't want to e-mail the whole form, just vertain fields. Is that correct?
You can use the data connection wizard to configure a button to send to different people depending on an XPath rule. However, to restrict the fields sent is harder (=as InfoPath assumes that you will always send the entire XML. You can choose to not attach the XML File and switch to a view that only has the fields that you want to send. Then, it should work.
Patrick Halstead
Project Manager at Qdabra