Hi, Though I have not tried it myself, the expat header files will not be under "c:\program files\expat\source\lib". Confirm that or look for the folder containing the expat.h file. I maybe totally wrong about the expat source tree structure though. -dhruva ________________________________ From: Sean Farrow To: boost-users@lists.boost.org Sent: Saturday, 4 April, 2009 1:39:19 PM Subject: [Boost-users] issue using expat 2.0.1 with boost Hi: I am having an issue when trying to utilize the graphml library with the expat 2.0.1 library. The library fails to compaile saying it carn't find expat.h. My expat_include variable is set to: "c:\program files\expat\source\lib" and my expat_libpath is set to: "c:\program files\expat\bin\" Any help appreciated. Cheers Sean. Add more friends to your messenger and enjoy! Go to http://messenger.yahoo.com/invite/