To GNU Help line I have had an old GNU F2c set up on my old computer and the machine died. I still have some f2c.exe and a special f2c.dll that i linked to the fortran. Now I have download cygwin and that seems to have a UNIX style window with the old dollar sign prompt. But the normal f2c commands don't work. Whats my next step. Cheers John Keays -- John Keays,Keays Software PO Box 80, Toowong, Q 4066 9/621 Coronation Drive, Toowong, Qld 4066, Australia Phone +61-7-3870-1711 fax +61-7-3870-1784 Web home page: www.keays.com.au