NW6.5 SP5, NDPS v. 3.01q

In the grand old days of NDPS printer management with NWAdmin, we were
able to push printers using the NDPS Remote Printer Management option and
selecting groups/printers to push.

We seem to be having problems now with certain users getting printers
pushed automatically.

First question: Is there a way to push printers using iManager or Remote
Manager? We'd like to know the best way to push NDPS printers to Windows
XP workstations without having to visit every workstation.

Second question: I'd like to update NDPS from v. 3.01q to 3.01t, which we
are using on some of our other print servers. What's the easiest way to
update NDPS components to 3.01t?