A new and fully-automatic version of dynamic Load Balancing on a Wide Area Network cluster consisting of 5 UNIX-type machines of different architectures and different operating systems is presented based on the recently described method of dynamic Speed Weighted Load Balancing in the context of Quantum Chmistry calculations with GREMLIN. The cluster itself is set up via PVM 3.4.3 and the 5 machines are located in some research centres in France, Italy and Austria and for internode communication we only allow the secure shell protocol. The automatic character is realized by repeated calls to a special dedicated load balancing tool that takes into account differing individual node performances via Speed Factors, which are altered periodically depending on the current cluster conditions.