Hi gpibssx
You'll find the driver for the NI-5102 on this page:
http://digital.ni.com/softlib.nsf/webcategories/85256410006C055586256BE600709528?opendocument&node=132060_US
You can download the SOFT FRONT PANEL too. This is a standalone utility. So you can test your 5102 without programming.
Hope this helps
Luca P.
Regards,
Luca