$ perl -e 'use DBI';

Can't locate DBI.pm in @INC (@INC contains: 
/usr/lib/perl5/5.10/i686-cygwin 
/usr/lib/perl5/5.10 
/usr/lib/perl5/site_perl/5.10/i686-cygwin 
/usr/lib/perl5/site_perl/5.10 
/usr/lib/perl5/vendor_perl/5.10/i686-cygwin 
/usr/lib/perl5/vendor_perl/5.10 
/usr/lib/perl5/vendor_perl/5.10 
/usr/lib/perl5/site_perl/5.8 
/usr/lib/perl5/vendor_perl/5.8 
.) at -e line 1.