I don't know if you are aware of the upcoming changes to Daylight Savings for the United States but changes are coming. I happen to carpool with 2 guys in Exchange and 1 is part of a corporate wide team working on DST, so I have begun hearing more and more about it. Please use the following as just 1 place to get started on reading if this is a new subject for you -

http://blogs.msdn.com/mthree/archive/tags/DST/default.aspx

I don't know that there is a magic bullet for this change so I would educate yourself on the products impacted, the type of geographic impact it could have for your business and to think through how you will handle the critical meetings you have. Have a back up plan and communicate with your team.

I hope that the information provided will allow you to be successful in this endeavor.

Tom