Hello jjsomer,
If you look at the documentation for the device it states we do support C/C++. We support C/C++ by directly calling the XNET dlls, so there is no reason this shouldn't work in VB6. We do not officially support VB6, since no testing has been done, but from a programming standpoint anything that can call into C DLLs should be able to call the drivers since C/C++ can. Let me know if this helps out and have a great day!
Best Regards,
Adam G
National Instruments
Applications Engineer