>> Would someone tell me where to get it or use another way to build my >> a.out to running under dos system? > > Look for "DJGPP" or better "Cross DJGPP" (gcc port for DOS). If you are > lucky, you can even find binary-packages for your distro, otherwise you > have to compile them yourself. Hi: thanks for your kind help. As I read the explanation on web, http://www.delorie.com/djgpp/why.html, it says the DJGPP is a program running on dos and compile source code to let it also can run under dos. But I need is some program that can transform my a.out in unix to exe format such that it can run under dos. appreciate your help, miloody -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ