Subj : Prevent loading multiple instances of program To : borland.public.cpp.borlandcpp From : "C. Chris Rogers" Date : Mon Dec 15 2003 06:11 pm How can I prevent loading multiple instances of a program in the Windows 2000 environment? The book, "C++ Builder How-T0", describes a method that uses a mutex, and it works with Windows 98, but not Windows 2000. Please help. Thanx CR .