kilowatt and bames53, this message is aimed at you two.
I can prove to you that all Mac OS X files can potentially use resource forks. Sorry to burst your bubble, but resource forks are still actively used in Mac OS X. Although it may not be a lot of information, the resource fork is actually still used, in any case.
See this thread:
http://www.macosx.com/forums/showthread.php?s=&threadid=10526
And as I said before, all files made with Classic applications (there are still a lot of people in the Classic Mac OS) have the potential to have a resource fork, as do many Classic and legacy applications. I want to be able to access the resources of these files/folders natively in Mac OS X.
So, sorry to say it, but you guys are wrong. ResEdit still has a future on Mac OS X. Now stop saying, "Nay" and help me find/program an adequate substitute.
Wait, lemme guess, kilowatt. You're now going to stop using the "Open With..." function because it goes against your principles which say not to use resource forks.