Two decision support systems were developed in order to help managers of small firms. The first is an inventory decision support system that utilizes both the fixed quantity model, the fixed period model, as well as forecasting techniques both for new and old products. The second is a support system for field (customer) service which utilizes a queueing network model and a simulation model. Both models are useful tools for strategic allocation of resources by a field (customer) service manager in order to improve customer service.