Abstract: With the rapid advent of Computer and Communication technologies, and successful merging of the two fields resulting in proliferation of novel applications, loosely coupled distributed computing systems have recently become the most attractive field of research of Information processing. The trend is that, all the computers connected by high speed links will virtually represent a colossal distributed computing system. At the same time the facilities should be extendible to people from different facets of life. The present infrastructure is not ready to assimilate such enormously big and divergent elements under a single framework. Flexible computing environment is a step towards defining and implementing such an environment. The main problem is the adaptation of the different elements to changes. Till now many researchers aimed to solve the problem of adaptation focusing on particular areas. We introduce some general definitions and properties, which are needed to be satisfied by the flexible system. We propose an implementation methodology, and introduce some simple examples for illustration.