I'm looking for example showing how to use trigger.bat utility to run a batch file (.bat).
I don't use that functionality but I would start here: http://pic.dhe.ibm.com/infocenter/cfpm/v10r1m0/index.jsp?topic=%2Fcom.ibm.swg.im.cognos.ug_cra.10.1.0.doc%2Fug_cra_id36190CustomizingtheFunctionalityofCognos8.html
There are several subtopics on trigger.bat and there seems to be some good information on how to customize it.
This link may also help: http://pic.dhe.ibm.com/infocenter/cfpm/v10r1m0/index.jsp?topic=%2Fcom.ibm.swg.im.cognos.ug_cra.10.1.0.doc%2Fug_cra_id21094Event-basedScheduling.html
Hopefully these answer your questions. Sorry I can't be more helpful.