USB 6211 with 2 Encoders labVIEW Interface

Hi,

I am trying to use 2 encoders (780251-01) to measure shaft rotation of 2 shafts to assure that they are rotating at the same velocity.  The encoders I plan on using are 780251-01 with a NI USB 6211.  I am seeking assistance on creating a VI.  Any help would be appreciated as I am a beginner to LabVIEW.  In the futiure, I plan to implement a National Instruments load cell. ( 783212-01)