They might not carry all groups (especially not the big "binaries"
ones). But let's assume they let you read Usenet online. If they
don't, it's going to be a long uphill struggle and I don't see it
being worthwhile to even start.
So they've got access to Usenet. Since making up a packet with uqwk
gets you off of their modem faster, I would think that they would be
excited at the prospect. They may need someone (like you!) to do the
research for them, though. If you can tell them step by step where
to get the source code, exactly what they'll need to add to their menu,
etc. etc., and show them that it will benefit them by letting them
support more users with the same equipment, you'll probably be able
to talk them into it.
Since you have an account there, you have better access than we do
to find out what their "mission" is and what software they already
support. Someone there may have had a good (or bad) experience with
certain programs and the local policy may reflect that. Ask questions,
and ,more important, offer to do some of the work! I imagine that a
freenet is always hungry for volunteers.
Hope this helps....
-- Kevin Martin <firstname.lastname@example.org> http://www.nic.com/~cannon/handson.html is the Usenet Offline page featuring YARN