Hi Brian -
Have the workflow you are going to transition to defined. (WorkflowB)
In the workflow you want to tansition out of (WorkflowA), add a New Workflow Link.
In the new workflow link, define which workflow (WorkflowB) and status you want to enter.
Finally, create a transition from the WorkflowA state to the new workflow link to WorkflowB.
Thanks a ton, Joy. That's easy once you know how!