I have Mac OS X, version 10.5.8 (Leopard). Thanks for clarifying that the binary I downloaded may be too new for my current software for it to properly work. I tried to follow the http://forum.winehq.org/viewtopic.php?t=7135&sid=e32737b040507ab8101e008e1cc3dedb instructions to install cabextract using MacPorts, but I was unsuccessful. I'm quite new at this, and I have no idea how to go about building cabextract myself. Do you have any suggestions for me? Much appreciated.