C:\Documents and Settings\Wassup>cd Desktop\Crypt-Rijndael-0.05 C:\Documents and Settings\Wassup\Desktop\Crypt-Rijndael-0.05>perl Makefile.PL Checking if your kit is complete... Looks good Writing Makefile for Crypt::Rijndael C:\Documents and Settings\Wassup\Desktop\Crypt-Rijndael-0.05>nmake Microsoft (R) Program Maintenance Utility Version 1.50 Copyright (c) Microsoft Corp 1988-94. All rights reserved. cp Rijndael.pm blib\lib\Crypt\Rijndael.pm cl -c -nologo -Gf -W3 -MD -Zi -DNDEBUG -O1 -DWIN32 -D_CONSOLE -DNO_ST RICT -DHAVE_DES_FCRYPT -DNO_HASH_SEED -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_SY S -DUSE_PERLIO -DPERL_MSVCRT_READFIX -MD -Zi -DNDEBUG -O1 -DVERSION=\"0.04\" -DXS_VERSION=\"0.04\" "-IC:\Perl\lib\CORE" _rijndael.c 'cl' is not recognized as an internal or external command, operable program or batch file. NMAKE : fatal error U1077: 'C:\WINDOWS\system32\cmd.exe' : return code '0x1' Stop.