or download this
D:\>perl -V
Summary of my perl5 (revision 5 version 8 subversion 8) configuration:
...
values: 100\, 90\, DACFramework\, DACProjectSystem\, RefCount\, Servic
+es\, SharedManagementObjects\, SqlPubWiz\, TSqlLanguageService\
Can't read SOFTWARE\Microsoft\Microsoft SQL Server\Instance Names key:
+ The system could not find the environment option that was entered