[Zope] Renderable Base Class ???

I'd read some discussion dating back to last year about a the concept of a Renderable Base ZClass; something that would allow a ZClass to be called like <dtml-var "myClassInstance"> Have there been any developments along this line, or any plans to incorporate the idea into Zope? I find myself in need of this functionality. Also, I did notice a product on Zope.org which claims to be a renderable base class, but it's a tgz and doesn't seem to uncompress for me on WinNT using WinZip7. Does anybody have a copy of this (working) that they might export and send? (It's a very small TGZ product and hopefully a very small zexp) ------------ Brian Withun