upward compatibility 2003 -> 2007 JahMic <jahmic[ at ]gmail.com> 4/18/2007 2:18:32 PM [Quoted Text] >From what I have read, for an addin, that is a unmanged c++ mostly mapi based and with some OOM support, this shouldn't be a problem, right? No recompiling or seperate versions needed? Time to get 2007 I guess. Thanks, J