Hi,
NI-DMM is necessary to use NI's DMMs. It is the main driver. I'm assuming that you're interested in using NI-DMM in Borland C++. Currently NI-DMM only provides language interface files for LABVIEW, CVI, VC++ and VB.
Some Borland compilers can be configured to link using MSVC .lib files (import libraries). If your compiler does not have this option, you can program using direct entry to the nidmm.dll file.
The following discussion is similar to your question:
http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RNAME=ViewQuestion&HOID=506500000008000000151A0000&ECategory=Measurement+Hardware.Multifunction+I%2FO
DiegoF
National Instruments
