MIB and SNMP walk...Which information do I need?

If you install your MIB so that it can be used by snmptable/snmptranslate, you can specify a table with a textual OID and its fields will be collected. There is an example of this here. If the MIB is not installed you will need to specify the numerical OIDs of each field like in the primary example, but you can leave the table OID out.