Metaclasses and new-style classes

[Jan-Ole Esleben]

Hi!

I've just posted a question about metaclasses in ZOPE on the ZOPE
list, and one of the replies said that metaclasses (at least
"painless" metaclasses) cannot be used without new-style classes (or
rather, that they don't work where you cannot explicitly use new-style
classes). I haven't so far been able to find _anything_ on the subject
- what is true here?

TIA,
Ole