Right, promise this will be my last post of the day, possibly the week :-)
I've almost sorted the issues out on a new migrated server that (I must
add!) I didn't screw up personally...

Netstorage is installed Im told (the files appear to be there) and the
http://<serverIP>/oneNet/NetStorage page comes up, with a login box. The
login box would normally have <NDS TREE NAME> in there, but it says
AuthXTier in the login box instead. And it wont authenticate any users, Ive
tried the full context too, but that doesn't work either.

I'm sure (hope!) somebody will solve this one in a flash, as it seems its
probably just a config file somewhere that needs a tree/context specified
for the user authentication, but I cant find it...

Here's hoping...