perl -v says I'm using perl 5.14.2. But I have a Perl64 folder which contains 5.16.3  set PATH gives me:

Path=C:\Perl64\site\bin;C:\Perl64\bin;C:\Program Files (x86)\HP Simple
+Pass\x64;C:\Program Files (x86)\HP SimplePass\;;C:\Program Files (x86
+)\Intel\iCLS Client\;
C:\Program Files\Intel\iCLS Client\;C:\WINDOWS\system32;C:\WINDOWS;C:\
+WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;C:\
+Program Files (x86)\Windows Live\Shared;C:\Program Files (x86)\Intel\
+OpenCL SDK\2.0\bin\x86;C:\Program Files (x86)\Intel\OpenCL SDK\2.0\bi
+n\x64;C:\Program Files\Intel\Intel(R) Management Engine Components\DA
+L;C:\Program Files\Intel\Intel(R) Management Engine Components\IPT;C:
+\Program Files (x86)\Intel\Intel(R) Management Engine Components\DAL;
+C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\IP
+T;C:\Pr
ogram Files (x86)\Hewlett-Packard\HP SimplePass Identity Protection\x6
+4;C:\Program Files\Samsung\AllShare Framework DMS\1.3.17\;C:\Program 
+Files\Samsung\AllShare Framework DMS\1.3.17\64bit\PATHEXT=.COM;.EXE;.
+BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC
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It's long, but the C:\Perl64\bin folder is there which is where the perl version 5.16.3 is located. After searching my computer, I found that Cygwin uses Perl version 5.14.2. After some googling, I found this module perlcygwin (http://search.cpan.org/~rjbs/perl-5.16.3/README.cygwin) should I download this to help me out?