UPS Simple Rate

[Brennan]

We don't yet support UPS Simple Rate via live API rates, however since it is a flat rate method, you should be able to use our flat rate methods to setup the different flat rates based from Extra Small to Extra Large and then use shipping method rules to limit when each one is displayed based on weight.

[talerco]

We have set up the UPS developer kit and are able to print labels using it - BUT - most of our packages are sent using UPS Simple Rate (flat rate) boxes. It does not appear as an option.
Am I missing something?
Thanks, David, SunOrganic Farm