I have Novell Netware 6.5 SP5

I have some problem with iexplorer 7 when I try to install new driver
with imanager on Broker on Novell Netware 6.5; it is not possible.
With iexplorer 6 there aren't problem and I can install new driver; but
now I have more PC with IE 7.

Is there a solution to this problem ?