Under Linux/FreeBSD/OpenBSD/NetBSD and related: 1. Use CPAN: prompt# cpan Net::SinFP 2. Use SourceForge: http://sourceforge.net/projects/sinfp tar zxvf SinFP-X.XX-X.tar.gz cd SinFP-X.XX-X/ make make install sinfp.pl will be in /usr/local/sinfp/bin . Under Windows: First, install WinPcap 3.1: http://www.winpcap.org . The following procedure was tested with ActivePerl 5.8.8.819, with PPM v4.0. # If you are behind a proxy: C:\> set http_proxy=http://username:password@proxy:port # Add gomor repository C:\> ppm repo add gomor http://www.gomor.org/files/ppm/repo-8xx 1. Use PPM, installs SinFP in default site area # Disable all other repo, if you have many. Or only ActiveState repo # by default C:\> ppm repo 1 off C:\> ppm install Net-SinFP # Re-enable all other repo C:\> ppm repo 1 on sinfp.pl will be in C:\perl\site\bin. 2. Use PPM, in own SinFP area # Create an area for SinFP C:\> mkdir C:\perl\sinfp C:\> set PERL5LIB=%PERL5LIB%;C:\perl\sinfp C:\> ppm gui # In the GUI, select Edit/Preference, and check sinfp, answer OK, then check # site area, or any other default area you use # Disable all other repo, if you have many. Or only ActiveState repo # by default C:\> ppm repo 1 off C:\> ppm install --area sinfp Net-SinFP # Re-enable all other repo C:\> ppm repo 1 on sinfp.pl will be in C:\perl\sinfp\bin. 3. If you have error messages loading some SinFP related DLLs Go to www.microsoft.com, then in the search field, type in: vcredist_x86.exe Download it, install it.