REGEDIT4

[HKEY_CURRENT_USER\Software\Microsoft\Devstudio\6.0\Build System\Components\Platforms\Win32 (x86)\Tools\32-bit C/C++ Compiler for 80x86]
"Input_Spec"="*.c;*.cpp;*.cxx;*.cc"
[HKEY_CURRENT_USER\Software\Microsoft\Devstudio\6.0\Build System\Components\Platforms\Win32 (x86)\Tools\32-bit C/C++ Compiler für 80x86]
"Input_Spec"="*.c;*.cpp;*.cxx;*.cc"
[HKEY_CURRENT_USER\Software\Microsoft\Devstudio\6.0\Text Editor\Tabs/Language Settings\C/C++]
"FileExtensions"="cpp;cxx;c;h;hxx;hpp;inl;tlh;tli;rc;rc2;cc"