Thanks for the suggestion Mike, I had already done that. But the
instructions there don't accord with what I'm seeing on my screen (iMac
G5 w/ OmniWeb 5.1.2).

For example, their note:

"To change the default view for the list of recent threads, go to any
group homepage. In the top right corner, just under the yellow bar,
you'll see two choices. You can view the threads with message text or
with titles only."

On my screen under the yellow bar of the wreck's opening page is "sort
by relevance" and "sort by date".

Their subsequent note:

"To change the default view for the thread page, click on any thread
with more than one message. By default, you'll see the conversation
view with all messages in the post displayed vertically. To change your
default to a tree view which shows the relationships between messages,
scroll to the top post and click the "view as tree" link under the
thread title. Once you've clicked the link, all threads will be
displayed in the tree view. To change your default back to the
conversation view, click the "No frame" link in the left pane of the
tree view."

....doesn't change the *default*, it just allows you to switch between
views on any post. I don't want to have to switch the view on every
post I look at to see the tree view. I want it to come up that way, and
can't figure out how to change the default. It's not in my Preferences
link either.

Still not seeing trees,
H