I would like to sort my feature class in a model based on coordinates stored in its attribute table. The sorting must be done on Y_coord descending, then X_coord ascending. The answer to this question looks like what I need, except I only have an ArcEditor Licence, and free versions of Xtools Pro and ET Geowizards. My model performs several other processes as well, so I need the sorting to be included in it. How can I perform the sort with the above limitations?