Hi, I am trying to build version 2.64 on VC++ 6.0, but I am getting these errors when trying to build muscle.lib: Compiling... MiscUtilityFunctions.cpp C:\burn\MUSCLE_messaging_service\muscle\util\MiscUtilityFunctions.cpp(353) : error C2065: 'TzSpecificLocalTimeToSystemTime' : undeclared identifier RS232DataIO.cpp C:\burn\MUSCLE_messaging_service\muscle\dataio\RS232DataIO.cpp(88) : error C2065: '_beginthreadex' : undeclared identifier Thread.cpp C:\burn\MUSCLE_messaging_service\muscle\system\Thread.cpp(105) : error C2065: '_beginthreadex' : undeclared identifier Error executing cl.exe. muscle.lib - 3 error(s), 0 warning(s) Can someone please help? __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com