[Twisted-Python] modal dialogs with the qt4reactor?

[Donal McMullan]

In a 2006 email, Ed Suominen links to two copies of "a non-blocking
modal dialog, immediately obtaining a deferred to the user's eventual
input."

http://twistedmatrix.com/pipermail/twisted-python/2006-September/014077.html

I'd love to know how to do this, but both sites are unreachable. The
internet giveth and the internet taketh awayeth.

Can anyone help?

Thanks!

Donal