How Do I Write an Effective Memo on Office Habits Like Saving Electricity?

Hey guys, kindly need help here. I'm an admin exec and need to do a memo or reminder to all staff regarding their daily office use—such as electricity-saving, what they should do when the meeting ends, switch off lights before leaving the office, etc. Can anyone help? I can't find it on the internet. I urgently need your help.

Thanks

Guys, I really need help. I want to do something like this...

Memo

To: [Name]
From: [Name]
CC: [Name]
Date: 1/24/2011
Re: [Subject]

1. Please make sure to bring your access card when coming to the office. Losing one access card will result in a fine of RM 100.00.
2. Please keep your company laptop safe, or you will need to replace it with the same model if it is broken or lost.

etc....

I really need help. I want to do something like this.

Need to Issue a Memo for Internal Office Staff to Save Electricity

Regards