If you have been able to find OIDs that you want to monitor by using the snmpwalk command, you should be able to configure them in the snmpget probe. (Note that I am talking about the Nimsoft probe named snmpget, not the snmpget command, which is typically available alongside snmpwalk.) You can enter OIDs directly in the probe GUI when defining variables to monitor, but I would recommend browsing to them (in the probe GUI) and then using drag-and-drop to add them to profiles or templates. Before you do this, you should upload the appropriate SNMP MIB(s) to the probe (which also done in the GUI). Then you will get more user-friendly information when browsing and in the variable definitions by default.