Pre-Processed maiil splitting under Gnus?

[Asymptotically Approaching Relaxation <feoh@cosmic.com>]

Hi folks, I'm at somewhat of an impass.

I love Gnus.  However I'm running it on a Cyrix 686 150 with 64 Megs na
RAM and even so watching Gnus split and filter my incoming mail is
_so_mind_blisteringly_slow_ that I simply can't cope anymore :)

(Note: I'm NOT slamming Gnus here.  It's elisp, and given the number of
 sexpr's it has to eval per message filtered I think it does a *fine*
 job.  It's just that every time I go to read my mail, it gets more and
 more painful every day to spend 5+ minutes watching Gnus go *chuggachugga*)

So.. Is there a away, maybe with XEmacs in batch mode or whatever, to have
some sort of daemonized Gnus process pre-filter my mail so that when I log
in it'll be all split as it should be?

I looked at using procmail, but the procmail/nnfolder solution seems complex
and I want to make sure I'm not missing something before I go convert my
1.5 pages of nnmail-split-methods into procmail syntax.

Thanks!

-Chris P.