I have *.csv data file containing an X value, a Y value and a time value from a GPS. These have been taken at 1 second intervals along a route. I would like a small .exe program to load this file into and interpolate between the times and X and Y values. I would then like to load another file with a list of time values in (around 10-15 a second) taken in between one second real values and the program to look up and report the X and Y value which has been interpolated between points and export to a new *.csv file.