I believe you'll need to write some code for this -- I imagine that your web service takes the individual strings, like, for example, what we'd see in a single row of a table... and that you need to basically for each row in your table populate the parameters for the web service and submit. If you are using InfoPath 2007, do some searching on XPathNodeIterator to find code samples for looping through a repeating group -- for IP 2003, I think you want IXMLDOMNodeList...