This paper introduces Peer-to-Peer Distributed Computing (P2PDisCo) software, which provides an interface for distributing the computation of Java programs to multiple workstations. P2PDisCo can be used to distribute any Java program that uses files for storing input and output parameters without significant code modifications to the Java program itself. P2PDisCo has been built over Chedar peer-to-peer middleware and is currently being used for speeding up the training of neural networks with evolutionary algorithm.