I would look into an app called ZWave Commander. It is compatable with the ControlThink USB ThinkStick. ControlThink is a Z-Wave software developer that was aquired by Leviton back in 2008. The ThinkStick and software are now sold as part of the Vizia RF+ line.
iTunes Preview for ZWave Commander
Vizia RF+ Line Card has the part number for the ControlThink software
Thanks for the response. Prior to posting I had purchased the product. Lets just say it's not very aesthetically pleasing to the eye, compared to something like Creston Mobile Pro, Lutron Home Control, Indigo Touch, etc. without incorporating the 3G portion I've yet to get it to actually function even with the server piece running. I guess what I am looking for is something that looks very pleasing to the eye for the client, vs something very "installer or Tech" looking :-)