I keep forgetting these 2 very handy STSADM commands;

To change the schedule which SharePoint uses to send Email Alerts;

stsadm -o setproperty -propertyname job-immediate-alerts -url http://{server url} -propertyvalue “every 1 minutes between 0 and 59”

To change the SharePoint Information Management Policy schedule;

stsadm -o setpolicyschedule -schedule “every 1 minutes between 0 and 59