Howto export points to a Google Earth KML file

The problem:
A table of xyz data points can be viewed spatially with different methods:
GMT and ArcView are just a couple of options. I often get tables of spatial data points in Microsoft Excel (xp ver.) format or CSV of some kind. An easy (and free) way to visualize the data points on Windows would be to export the data and view it on Google Earth.
The solution:
points2kml (115kb).
In order to ease the work-flow I wrote a VBA macro add-in for Excel that exports selected fields (longitude, latitude, name and data) to a Google Earth KML file. the point2kml add-in and can be found on my scripts page.