I am using a PowerRouter 732 for traffic-shaping on a 30MB link. Graphing is enabled for 6 simple queues. The global queue is providing skewed numbers in the "monthly" and "yearly" graphs. The "bits per second" are so large that small data is almost meaningless. Am I missing something? Are these graphs configurable and if so where?

They are not. Use external monitoring via SNMP if you want more control.