I've never manually deployed a webservice, but I have manually deployed files to a cRIO using the FTP server. According to the documentation if the VIs, shared libraries, and data files contained in the .lvws file are complete and self-contained you should be able to push it over to the cRIO using the FTP server.
What steps have you tried so far? Where are you at?
Applications Engineer
National Instruments
CLD Certified