I cannot transfer directly from the Windows hard drive since the "drive" that HFVExplorer creates is actually a file. The only way to get anything onto that drive from within Windows is to use HFVExplorer. However, it tries to be helpful and checks the validity of the files. I do not need it or want it to do that and there doesn't seem to be any way around it.
Only under OS 9 and up with StuffIt 7.x and up (which requires OS 9). However, I do not have a ROM file that will support OS 9. I can install up to OS 8.1. If I'm not mistaken, StuffIt 7.x and up require a PPC Mac as well. The only PPC Mac emulators I can find seem to require Linux and have to be compiled. That is one thing I hate about Linux. While I am a developer, I want the applications I use to be pre-compiled. I do not want to use a command line interface to compile a program to use a GUI. It simply doesn't make sense. I may have to go that route, but i'm not certain that it will work.
This is more of a headache than it's worth. I don't know if I should be mad at Apple for creating and pushing the resource file concept or Alladin for creating a file format that cannot be used on earlier computers. Maybe both.
[EDIT]
Just out of curiosity, does anyone happen to know the format of the .sitx file? It may be worth my time to write my own extractor.