Here is a list of supported compilers with NI-DAQ 4.9.4 or earlier found on the www.ni.com/support website search
Apple MPW 3.3.x
Mainstay VIP-C 2.0.x
Metrowerks CodeWarrior Pro 1
Staz Software FutureBASIC 2.x.x
Symantec THINK Pascal 4.0.x
Symantec THINK Project Manager 7.0.x Symantec Project Manager 8.0.x
Zedcor FutureBASIC 1.0.x
If are programming in a different programming environment you will have to use Register Level Programming (RLP). For more information on RLP you can visit www.ni.com/support/daqsupp.htm and look under the Resources for register level programming link.