put these files in a temporary directory on your hard disk ( i.e. c:\download ):

install.bat
seal107p.zip
ftp://ftp.info-zip.org/pub/infozip/MSDOS/unz550x.exe
ftp://ftp.info-zip.org/pub/infozip/WIN32/unz550xN.exe
http://clio.rice.edu/cwsdpmi/csdpmi5b.zip
http://clio.rice.edu/djgpp/win2k/djdev204_alpha.zip
http://clio.rice.edu/djgpp/win2k/bnu213b.zip
http://clio.rice.edu/djgpp/win2k/dif28b.zip
http://clio.rice.edu/djgpp/win2k/fil41b.zip
http://clio.rice.edu/djgpp/win2k/gcc321b.zip
http://clio.rice.edu/djgpp/win2k/mak380b.zip
http://clio.rice.edu/djgpp/win2k/pat253b.zip
http://upx.sourceforge.net/download/upx124d.zip
http://upx.sourceforge.net/download/upx124w.zip
http://telia.dl.sourceforge.net/sourceforge/nasm/nasm-0.98.35-win32.zip
http://telia.dl.sourceforge.net/sourceforge/nasm/nasm-0.98.35-djgpp.zip
http://telia.dl.sourceforge.net/sourceforge/alleg/all417.zip
http://www.libpng.org/pub/png/src/zlib114.zip
http://www.dcc.uchile.cl/~chasan/files/seal107.zip

then execute install.bat

links:
http://www.info-zip.org/
http://clio.rice.edu/cwsdpmi/
http://clio.rice.edu/djgpp/win2k/main_204.htm
http://upx.sourceforge.net/
http://alleg.sourceforge.net/
http://nasm.sourceforge.net/
http://www.gzip.org/zlib/