Hello, I successfully built GCC 3.0.4 on a Windows 2000 Celeron 433 MHz, running Cygwin DLL version 1.3.10 config.guess output: i686-pc-cygwin gcc -v output: Reading specs from /usr/lib/gcc-lib/i686-pc-cygwin/3.0.4/specs Configured with: ../configure --prefix=/usr Thread model: single gcc version 3.0.4 Sincerely, Wouter