The Pierce County GIS and the Surface Water Management Division are jointly developing a Caller Response System to handle storm related problems calls in a more efficient manner. ArcView and PowerBuilder have been chosen as the tools build the application. ArcView is the county standard for GIS display, while PowerBuilder is the front-end for the county's Sybase RDBMS. The integration of these tools involves a series of decisions and choices to most efficiently perform the tasks of the application. The following are a few of the questions which need to be answered before implementing the application. Will the most effective system be developed and run under the UNIX operating system or on a PC platform? If on a PC will it run under Windows NT or Win95? Which platform is the most stable? Which runs the most efficiently? Which best fits with the customers existing hardware or future hardware budget? Which is the most easily expandable? How will PowerBuilder and ArcView communicate with each other? What additional hardware and software will be needed to communicate and run both tools simultaneously? This paper will discuss these and other issues related to this integrated application and will outline the decision making process involved in implementing the Caller Response System application.