Hello,
The legend property of the graph/chart can be accessed through Labview. If you take a look at the Word_Insert_Chart.vi (C:\Program Files\National Instruments\LabVIEW 7.1\vi.lib\addons\_office\_wordsub.llb\Word_Insert_Chart.vi), you will notice that there is a property node to the chart. One of the properties is for the legend on the chart, and from there, you could create a property node for the legend.
A few of the exposed properties are font, height, width, and position. In particular, the font property is read only. So, in short, you will not be able to change the font in your legend short of possibly getting an ActiveX reference to your graph and see what properties this reference exposes.
Thanks.
Wendy L
LabWindows/CVI Developer Newsletter