The Measurement Studio graph for Visual C++ does not currently support +/- infinity. Your best bet for now would be to use numeric_limits::min() and numeric_limits::max(), although I think these are the same as -DBL_MAX/DBL_MAX.
You may have noticed that the BaseValue property drop-down on the Plots tab of the property pages has values for -Infinity and +Infinity, but these will just set the BaseValue to numeric_limits::min() and numeric_limits::max().
- Elton