Hello
You can use secondary data connections to submit and recieve Data connections. For more information on this please read the Links below
http://office.microsoft.com/en-au/assistance/HP011039031033.aspx
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/odc_ip2003_tr/html/odc_INF_Lab_08.asp
Hope this will help you.
Kalyan G Reddy
Infopath MVP 2007 and 2008