Both the SharpHog Southern Pine Beetle Infestation Model and the related Spot-Growth Database Project have already implemented platform-independant xml-based exposed interfaces, and will be available as web-services.  The Quick-Form for running the model uses a cobbled together assembly, but the web service will be lean, open, and documented.

Visit the recent SharpSpb documentation site created with a tool called Sandcastle from the structure and content of a recent version of the source code and comments.  Documentation for the web service will focus more on the exposed service methods.  Further documentation will describe the powerful system for controlling the model by notations and additions in the Input Data--eliminating the need for multiple service methods.

Investigation into implementing the model in a "cloud-computing" environment may be well worth the time.  Model runs cause spikes in CPU use by the hosting machine--which could possibly interfere with other activities if the server is being shared.  These spikes would not be an issue in the cloud.  Huge data sets could be run as well, really big, conceivably opening up new statistical analysis tools and techniques.