Dear Makoto,
Generally, NI-VISA is only provided with NI hardware or software and we make it available on our website for our customers' convenience for upgrading existing, legally licensed copies of NI-VISA. With this in mind, I would be happy to discuss with you your specific situation and come to an agreement for you to include NI-VISA on your CD. Please contact me to discuss further.
Dany Cheij
Instrument Control Product Manager
(512) 683-5286
dany.cheij@ni.com