compile curl binary on windows using mingw32

in www.mingw.org
download the mingw gui installer
run the installer, also install mingw32-make

in curl.haxx.se
download the source, like curl-7.20.0.zip
extract it, like c:\curl-7.20.0

start -> run -> cmd
go to the curl path:

cd \curl-7.20.0

also add the mingw bin path:

path=%path%;c:\MinGW\bin

then everything should be ready, to compile:

c:\MinGW\bin\mingw32-make.exe mingw32

after, the curl.exe is in \curl-7.20.0\src\