[ixp1200] ME-ME Ring

I'm trying to write code that passes packets between microengines hopefully using ucode macros provided by the SDK. Right now, I have the Ingress ace running on ME's 0 and 1 (1 Gigabit port), Intermediate processing code on ME's 2, 3, 4, and the Egress ace running on ME 5. I need to pass packets from ME's 0,1 to ME's 2,3,4 (The egress side isn't to important right now). The DL_MESink macro seems to queue the packets up, but I'm unsure how to dequeue the packets at the other end. Can the ME-ME rings provided by the SDK be used for this, and, if so, how are packets dequeued? Thanks, Chris