How to set up Novell NDPS

I set up NDPS on NetWare v5.1 sp3a with IPX and IP
make network printer work work ok.

Then I remove IPX from NW Server and re-boot NW server when LOAD BROKER and LOAD NDPSM had error
Cannot load broker and NDPS Manager ???

I put back IPX andre-boot server the BROKER and NDPS Manager load OK.

How can I configure the network to make Pure IP without IPX Load and Bind and NDPS will work ???

NDPS is dwsigned to handle the Pure IP on NetWare
is that ture ??