how we will use these Job_open and Job_submit job_close??

Hi Experts,

i am new in Developement, i need one help here my problem is

I have one issue which is a report here i am getting the data into internal table, that data fetching i want to schedule it in background job..

can any body tell me how can i use the JOB_OPEN and JOB_SUBMIT function modules....

plz provide any example..

Thanks in Advance,

Venkat N