Initiating a workflow

I defined a worflow but i couldnt initiate that workflow or create a lead with the workflow to follow the steps defined.
could somebody help me.

Hi ghassan,

Do you have any errors in your sugarcrm.log? Have you set up the scheduler/cron job on your server to allow AOW to run? If you navigate to Admin -> Schedulers -> Run AOW Workflow, is it active? Has it ever run?