fpTEX is available from CTAN in the directory :
ftp://ctan.tug.org/tex-archive/systems/win32/fptex/
or from
ftp://ftp.ese-metz.fr/pub/tex/win32/
which is mirrored daily by the CTAN backbones in their systems/win32/fptex directory.
The web2c-win32 directory contains also additional tools like psutils, gnutools, perl and the files necessary to set up LaTeX2HTML.
Beta versions of fpTEX are available from
ftp://ftp.ese-metz.fr/pub/tex/win32-beta/