Stuffit?
 

I click on something, a window appears on my desktop, says it's UnStuffing, then the window disappears. What happened? Where did the "UnStuffed" file go and how do I find it? Sorry if I'm an idiot--just not sure where to go to ask.
BTW I'm running OSX on a G4. Thanks.

OSX is the only LW version where you can launch files that are not multimedia files.

But still, I would not recommend doing that. Go to your LW downld folder & manually open the sit file. Go to LW's Library window, select Saved Files & press the Explore button. This will open the folder up for you. That's where your file will be. ;)