NCR unix snmp agent

Good Day,

I have requirement to monitor a number of NCR unix server for our unix team. As the System Management product that we use in out company does not have an agent for NCR unix I am investigating the SNMP route. I got the unix guys to enable SNMP however, it seems the default MIB that is loaded is the iso mib. Does anyone know how to go about extending the mib with the host-resource-mib to monitor disk, cpu , processes etc?

The version info of the NCR server that I have been given:

UNIX_SV 4.0 3.0 3519 Intel(R) Xeon(R) CPU E5405 @ 2.00GHzISA/PCI

And the system description in SNMP is:
Name: sysDescr.0
Value: STREAMware TCP Release 6.0.0 for MP-RAS
Name: sysObjectID.0
Value: Lachman.1.5.1.0

Thank You

Regards
Pritesh