Carolly (& magnet), that wouldn't solve it - it is only a way to mount Mac Volumes in order to access the plain data forks of the files. It is intended for tasks like a PC-only printshop that occasionally gets Mac-only ZIP-disks or CDs - this way they can mount it and copy the files to their own disks. If you copy something onto it, it will still be a plain PC file - it'll be the same as transmitting it by a .zip archive and to extract it on Mac. The only real chance for a PC -> Mac convertion on PC would be a much improved StuffIt Engine by Aladdin Software, that would allow low-level access during the .sit creation. In other words, it would need to convert directly into a .sit file. It is very unlikely that they ever release something like this, but - just in case - you can be sure that I'd be the first to give it a try... Cheers, MartinC