Zip files with resource forks

I was having the hardest time with a zip file someone created for a System 7 installation. Stuffit Expander wasn't recognizing it. When I unzipped it in an OS X Finder, the resource forks and data forks would split into separate folders. I read online and discovered that command line utilities in OS X like ditto and tar had support for resource forks, so I tried one:

ditto -x -k --sequesterRsrc /path/to/my/archive.zip newfoldername

That did the trick. I copied the folder to my floppy and whistled down the wind.