You could have downloaded RoomDex 1.5 for Mac from our application library for free. The program lies within Business Tools, more precisely General.
From the developer:
[ via MacInTouch ] RoomDex is a scheduling program that makes scheduling easy. Arrange events such as meetings, conferences, ball games and other activities with a few simple clicks and keystrokes. Plan repeating events, spanning several days, weeks, or even months. View and print daily and weekly schedules. If the located is already booked, RoomDex will let you know so you can make different arrangements. A mult-user version is also available.