I think this is not available for the new creators but I'm not sure...
It isn't. NONE of the old themes are available for new networks.
do you know why? or can we request for it?
Because it's old, that's why. The old themes do not work with the Design Studio Ning released to our networks several months back.
You can request it, but you will not get it.
too bad... some of old theme are very nice (from my personal point of view)....
next question, I wonder how Ning to support the old site like mine? perhaps I would be forced to change sooner or later.. I don't really agree with this is what they should do, they should develop some features which could support the old site instead.
Most of us hated the old themes which is why we used to spend money hiring someone to fully customize our networks. There were also too many networks that looked the same, which is bad when you're trying to express your individuality and unique vision.
There's no way Ning will continue to support the old sites. That would be like Ford continuing to make horse carriages for the five people in the world that prefer them over automobiles. There are plenty of CSS experts here, maybe you could find one who can give you an old theme and make it work with the new theme editor.