With lifecycle designer create the template PDF form (blank form ) and save it as a interactive form. Create the data XML file in a format specific to XDP and save this file as data_File.xdp (or whatever name u like but with .xdp). In the XDP file, you can specify the template PDF file name. Double Click and open the XDp file- you will see the XDP data merged with the template PDF file.
Hope this helps.
Regards
Samant