[Boost-users] boost::asio Visual Studio 8 - fatal error C1189: #error : WinSock.h has already been included

I have upgraded to VS 8.0 Standard and when compiling ASIO errors on the following: 1>Unknown compiler version - please run the configure tests and report the results 1>C:\tor\trunk\lib\boost\boost/asio/detail/socket_types.hpp(27) : fatal error C1189: #error : WinSock.h has already been included Is this a known problem? thanks jc