By default, Microsoft FrontPage defines a recent file as one that has been created within the last 30 days, and it defines an older file as one that that hasn't been modified in the last 72 days.
Define recent files
On the Tools menu, click Options, and then click the Reports View tab. In the "Recent" files are less than box, type or select the number of days.
Define older files
On the Tools menu, click Options, and then click the Reports View tab. In the "Older" files are more than box, type or select the number of days.