Help with finding newsgroup post deletion tool

I'm a Sysop & Moderator for a newsgroup
and am looking for a Post deletion tool
that can delete posts in quantity,
sort posts by Sender or Subject, and
allow the selection & marking of those posts
for mass cancellation...
all using standard online permissions of a Sysop.

I would Prefer it was a GUI,
(but a command level cmd is OK).

Current Configuration:
I'm currently using a delete tool plugin for
Outlook Express 6 on Win98SE,
but it only cancels one post at a time.

This is insufficient.

Any better solutions out there?

Chris
Graystar Sci.