compiling own extension for php-5.1.1

hello, i am trying to port a self-written extension from php-5.0.2 to php-5.1.1, if i try to load the extension i get an error: ext/php_webcontrol.dll doesn't appear to be a valid Zend extension then i tried to compile the minimal example from ext/skeleton, but same error :( this is my configuration in my .dsp-file # PROP BASE Use_MFC 0 # PROP BASE Use_Debug_Libraries 0 # PROP BASE Output_Dir "HP_511" # PROP BASE Intermediate_Dir "PHP_511" # PROP BASE Ignore_Export_Lib 0 # PROP BASE Target_Dir "" # PROP Use_MFC 0 # PROP Use_Debug_Libraries 0 # PROP Output_Dir "PHP_511" # PROP Intermediate_Dir "PHP_511" # PROP Ignore_Export_Lib 0 # PROP Target_Dir "" # ADD BASE CPP /nologo /MD /W3 /GX /O2 /I "php-5.1.1" /I "php-5.1.1\main" /I "php-5.1.1\Zend" /I "..\bindlib_w32" /I "php-5.1.1\TSRM" /D ZEND_DEBUG=0 /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "WEBCONTROL_EXPORTS" /D "COMPILE_DL_WEBCONTROL" /D ZTS=1 /D "ZEND_WIN32" /D "PHP_WIN32" /D HAVE_WEBCONTROL=1 /D "LIBZEND_EXPORTS" /FR /YX /FD /c # ADD CPP /nologo /MD /W3 /GX /O2 /I "php-5.1.1" /I "php-5.1.1\main" /I "php-5.1.1\Zend" /I "..\bindlib_w32" /I "php-5.1.1\TSRM" /D ZEND_DEBUG=0 /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "WEBCONTROL_EXPORTS" /D "COMPILE_DL_WEBCONTROL" /D ZTS=1 /D "ZEND_WIN32" /D "PHP_WIN32" /D HAVE_WEBCONTROL=1 /D "LIBZEND_EXPORTS" /FR /YX /FD /c # ADD BASE MTL /nologo /D "NDEBUG" /mktyplib203 /win32 # ADD MTL /nologo /D "NDEBUG" /mktyplib203 /win32 # ADD BASE RSC /l 0x406 /d "NDEBUG" # ADD RSC /l 0x406 /d "NDEBUG" BSC32=bscmake.exe # ADD BASE BSC32 /nologo # ADD BSC32 /nologo LINK32=link.exe # ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib php5ts.lib /nologo /dll /machine:I386 /out:"PHP_511/php_webcontrol.dll" /libpath:"php-5.1.1\Release_TS" /libpath:"php-5.1.1\Release_TS_Inline" # ADD LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib php5ts.lib /nologo /dll /machine:I386 /out:"PHP_511/php_webcontrol.dll" /libpath:"php-5.1.1\Release_TS" /libpath:"php-5.1.1\Release_TS_Inline" i looked through the source and found in zend_extension.c this: DL_FETCH_SYMBOL(handle, "extension_version_info"); if i understand this right, DL_FETCH_SYMBOL is a makro for GetProcAddress() and in my dll "extension_version_info" is not set? TIA, marco glatz