I'd go down a different route - get a PDA that will connect via wifi or with a SIM card and it will collect your mail and sync with Outlook on your laptop. That way you will have all your contacts, appointments etc within easy reach.
I've got the O2 XDA Exec and it's a wonderful little beast. It cam unlocked so I put in my Orange SIM card when away from a wi-fi source.
O2 Xda microsite : Xda Exec
Having said all that, I like what you suggest above... I look forward to seeing some positive replies.