@JZ4031 

Or you could use the e-Organizer for your clients who aren't adherents to the Apple cult.  The percentage of MAC users is now about 10%, although with certain client lists I'm sure it's higher.  Do you want to tell 90% of your clients that they are being inconvenienced by a minority?  I can see this turning into a California ballot issue,  Prop 138: All software must be MAC compatible.