Is imap+procmail possible?

[Vadim Gutnik <gutnik@mtl.mit.edu>]

Splitting with imap in gnus doesn't seem to be as powerfull as even
nnmail-split-fancy, I'd like to split mail as it comes in rather than
when I read it, and I don't want to run emacs continuously; so, I'd
like to split with procmail. Is there any way to make imap play nice
with procmail? Maybe I could add a header, and nnimap would just file
the message into whatever group the magic header says to file it in?

	Vadim