In this form, it's meaningless, since there is no indication which registry key should be modified. There should be a line specifying a registry key in between, e.g.
Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Common\LanguageResources\EnabledLanguages]
"1033"=""
This would set the value named 1033 in the registry key HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Common\LanguageResources\EnabledLanguages to an empty string.