Problems in Installing windows Client Libraries for Postgresql

when we execute

nmake /f win32.mak

we are getting a follwoing error

    cd include
    if not exist pg_config.h copy pg_config.h.win32 pg_config.h
    cd ..
    cd interfaces\libpq
    nmake /f win32.mak
Building the Win32 static library...

No configuration specified. Defaulting to Release.

    cd ..\libpq++
    nmake /f win32.mak
    cd ..\..\bin\psql
    nmake /f win32.mak
    cd ..\..
    echo All Win32 parts have been built!
All Win32 parts have been built!

After Directory mapping and

on executing the Psql

we are getting the follwing error

psql:could not create socket An address incompatible
 with the requested protocol was used
 (0X0000273f)


Please do advice Group ,

Thanks
REgards

Neelakantan