It's probably simply a 32-bit installer for 64-bit software. The plan for those, as I understand it, is to make the 32-bit and 64-bit versions of Wine aware of each other. Wine would then transparently select the 32-bit version to run the installer, but it would report that it is running on a 64-bit system. This hasn't been implemented yet. For now, these installers will likely refuse to install because they see a 32-bit system. If the installer claims it's on a 32-bit system, and you can figure out how it decides this, you may be able to hack Wine to allow it to install. That said, it's still very likely you're out of luck for now. Vincent Povirk