Ok i got this one today and your bloody right, no software included, funny that! iv emailed him and he sent the software via email but, funnily enough it still wont work as the system wont recognize the hardware! It came with the usb -> serial converter so just waiting for him to get back to me with the correct driver hopefully!i doubt it comes with the software for a start, im sure the cable will work though and there are apps such a ECU talk which are free to download and use.
I bought this one http://cgi.ebay.co.uk/Nissan-Consult-Diagnostic-Interface-Tool-14-pin-Scanner_W0QQitemZ280320221638QQcmdZViewItemQQptZUK_Diagnostic_Tools_Equipment?hash=item280320221638&_trksid=p3286.c0.m14&_trkparms=72%3A1689%7C66%3A2%7C65%3A12%7C39%3A1%7C240%3A1318
and even linked it my my ipaq/pda http://www.gtiroc.com/forums/showthread.php?t=54539&highlight=ECUTalk
only down fall with the one I got you need a usb -> serial converter (which I already had)