D:\>perl -V
Summary of my perl5 (revision 5 version 8 subversion 8) configuration:
  Platform:
    osname=MSWin32, osvers=4.0, archname=MSWin32-x86-multi-thread
[...]

D:\>test.pl
path SOFTWARE\Microsoft\Microsoft SQL Server
subkeys:
values: 100\, 90\, DACFramework\, DACProjectSystem\, RefCount\, Services\, 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

##</code><code>##

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server\Instance Names]

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server\Instance Names\OLAP]
"MSSQLSERVER"="MSAS10_50.MSSQLSERVER"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server\Instance Names\RS]
"MSSQLSERVER"="MSRS10_50.MSSQLSERVER"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server\Instance Names\SQL]
"MSSQLSERVER"="MSSQL10_50.MSSQLSERVER"