More flexible startup scheduling

A question was recently submitted to Macworld’s Mac 911 section which is relevant to many of us with mobility or dexterity problems:

I have muscular dystrophy and have difficulty manually starting my iMac. I use the schedule in System Preferences to turn on the machine but it only offers daily, weekends, or weekdays options. Since I have a different use on weekends is there a way to have multiple schedules?

The other program mentioned in the article comments – iBeeZz – also looks useful and is cheaper than the one they mention.

- Ricky Buchanan