Hi there,
I'm Matt, and I ran the darnkitty.com site. I was sad that it had to close down, but once the last browser stopped supporting Java a couple of years ago, nobody was able to play JSW on my site anymore, and now Flash is going the same way, so there's not really any more point keeping the site going.
For now I have at least re-enabled the JSW section of the site: http://www.darnkitty.com/jsw/. But there isn't a browser out there anymore that runs JAVA (in particular Java applets), so I would be very surprised if you could get the game itself to load.
I can upload a zip file if people would like, containing the room images and comments, etc. But it would take a couple of days.
Matt