We created a map of the building WAY back when (NW 6.0) using the
maptool thingy.

We're now upgraded to OES NetWare (SP5 and appropriate post patches).

When using firefox, we can access the map page, but when you try to
install any printer, it states that no iPrint client is installed (but
it is)

Windows 2000/XP exhibit same symptom.

iPrint client is v4.05, although upgrading to v4.15 does not appear to
solve the problem either.