Wulf,
I haven't used his distro, but I'll assume it operates as Linux does.
To update manually, just move to a different terminal (ctrl, alt and one of the "F" keys-not sure how many TTY's he has in his client), login and change directories so that you're in the directory where the RC5 client is located, and run dnetc -update, or -flush if you just wanted to flush.
To edit the configuration, I don't know. Might need a text editor, and I doubt these little distros have enough space to have one built in. Not sure on that; we probably need one of our Linux gurus in here.🙂
Russ, NCNE