Our application is the configuration of telecooperation systems. The need for new configuration systems in this area matches well with the advances in the AI domain. We argue that case-based reasoning is very useful in the configuration of telecooperation systems and show the extension of an existing resource-oriented configurator to reason with cases. Finally we present a general method from case-based reasoning and resource-oriented configuration. Thereby special consideration is given to the reuse of cases which is done by adaptation.