Look into the following topics in Access Help and in Windows
1. Command Line options - option "-x macroname"
2. Windows Task Scheduler
3. Search this forum for topics such as "Scheduling" - but watch out because that is a multi-valued word. You want the articles that have to do with running an event at time X, not the articles that have to do with databases to track task schedules. So some if the hits on that topic will not be what you want.