The quick rebuild instructions are: 1) Install cygwin from http://www.cygwin.com/ Make sure you install the gcc and g++ compilers, autoconf, automake and the X11 libs. 2) Unzip the A+ source code into a working directory. Make sure you preserve the file tree structure. 3) In a cygwin prompt move to the A+ working directory and run ./rebuild This should create a copy of A+ under c:\aplus 4) Test A+ by running aplus.exe from the cygwin prompt. JPM August 2004