You'll need GO32.EXE to run any of the executables here on a PC. This is a 32-bit DOS extender for programs compiled with DJGPP, a free 32-bit Unix-ish compiler for dos. You can get the whole compiler and development environment too if you wish: The primary distribution site for djgpp is Coast to Coast's SimTel archive, , in the directory . There are many other SimTel mirrors, so try to find one close to you. Here is a list of additional SimTel mirrors to try: Rochester, MI: oak.oakland.edu /SimTel/vendors/djgpp St. Louis, MO: wuarchive.wustl.edu /systems/msdos/simtel/vendors/djgpp Corvalis, OR: archive.orst.edu /pub/mirrors/simtel/vendors/djgpp Australia: archie.au /micros/pc/oak/vendors/djgpp England: src.doc.ic.ac.uk /pub/packages/simtel/vendors/djgpp Finland: ftp.funet.fi /pub/vendors/Simtel/djgpp France: ftp.ibp.fr /pub/pc/SimTel/vendors/djgpp Germany: ftp.uni-paderborn.de /SimTel/vendors/djgpp Hong Kong: ftp.cs.cuhk.hk /pub/simtel/vendors/djgpp Israel: ftp.technion.ac.il /pub/unsupported/dos/simtel/djgpp Poland: ftp.cyf-kr.edu.pl /pub/mirror/vendors/djgpp Sweden: ftp.sunet.se /pub/pc/mirror/SimTel/vendors/djgpp Switzerland: ftp.switch.ch /mirror/simtel/vendors/djgpp Taiwan: nctuccca.edu.tw /PC/simtel/djgpp Thailand: ftp.nectec.or.th /pub/mirrors/SimTel/vendors/djgpp You can also get a stripped-down and more-ready-to-go version called EZ-GCC through the info page . Get (and READ !!!) the EZ-GCC.TXT first!