Am trying to install printers on two machines, one running Win 98 and one
running Win XP.

I browse to the Novell Server, choose iPrint from the left (gray) menu,
then choose Install Printers from the right (yellow) menu. I see a list
of the printers on the network. I click the one I want to install, and
get a dialog box saying it's not installed and to confirm I want to
install, and I click yes.

Now it starts installing - the dialog box includes a list of tasks and
one of those lines of little boxes that confirm progress is being made.
Except this goes on for ever. A tick appears next to Download printer
driver, and then the little boxes keep appearing, then they all disappear
and start again, but no progress past this point.