Disclosed are a method of and system for adapting a computer program to make use of a grid based system of resources, said grid based system using a given set of grid protocols. The method comprises the steps of providing a profile of the computer program; and providing a grid adapter including a series of application program interfaces (APIs) for interfacing said computer program to the grid based system using said one or more of said grid protocols. The profile is used to select one or more of the APIs to interface said computer program with one or more of the resources of the grid based system.