powerful and therefore recommended: go to http://sourceforge.net/projects/ibfbcoex/ and get DBServerToggler. This little feller, when started, nestles itself in the System Tray and does all the dirty work start a server, DBServerToggler will first halt the other one if it's running. You can choose between application mode and service mode for each server independently. Add DBServerToggler to your Startup things affect the way Firebird should be set up to coexist with InterBase; they also affect DBServerToggler, which is the preferred tool for IB-Fb server switching. However, because development of the