Richard,
The LabVIEW base package doesn't include the waveform generation.vi.If you do have those vi's on your system they would be at the following path:
C:\Program Files\National Instruments\LabVIEW 6\vi.lib\measure\masignal.llb or
C:\Program Files\National Instruments\LabVIEW 6\vi.lib\analysis\1siggen.llb
Cyril
Cyril Bouton
Active LabVIEW Developper