Carlos, Thanks for those links! I am currenltly using prebuilt 4.6 32 bit libs and was hoping Nokia prebuilt the x64 too. I guess I might have to look into building myself as well. -Jeff Jeff, not yet. I'm still linking with a 32bit QT library of 4.5.2 I compiled for VS2008 sometime last year. I followed a guide similar to this one: http://dcsoft.com/community_server/blogs/dcsoft/archive/2009/03/06/how-to-se... At the time I didn't see a need for a 64bit version of FsGui. Since FSComm has FreeSWITCH in the back end this kind of changes things. Looks like someone put up a wiki on compiling QT for Win x64: http://en.wikibooks.org/wiki/Opticks_Developer_Guide/Getting_Started/Buildin... Now that QT 4.6 is out I might have to revisit a new library build with 64 bit in mind. Carlos -- View this message in context: http://n2.nabble.com/FSComm-Windows-build-tp4289256p4311097.html Sent from the freeswitch-users mailing list archive at Nabble.com.