Trigger event after background job completes !

Hi fellow SDNers,

I have 2 questions actually, but related to same thing, so posting here only...

Q1) suppose i have a job scheduled by a given FROM and TO time in SAP R/3 SYSTEM

now if i want that after completion of this job(backgroud).. an event should get triggered (automatically)..NOT BY SM64 then what stpes need to be taken..

Q2) once event is triggered...(IF i get the solution).. this should invoke another event in SAP APO side, which would then result in running of background job scheduled.

i can do this part, how to run the background scheduled job..but problem is in gtting event triggerd...

should we be using RFC ??

please give me step by step procedure..

would be thankful for the same...

revert back, if my question is not clear...

thanks

Rohan