Not sure about the standard Desire, but just done a quick search and saw a post on Android forums about it definitely being possible, but it may be via an app.
Cheers for the ride offer, but due to setting up my own business and working away a lot have only been out a handful of times this year with my usual Thursday night Church Inn riding crew.
I seem to remember that even when reasonably fit your lot crucified me – most impressed at the singlespeeder who sailed past me (whilst I was spinning in granny) out of Ambergate on the final leg of a Crich Chase/Shining Cliff ride.
I know Muffin Man (Tim) reasonably well and got on pretty well with Dangerous Dave also, but not sure if they get out with you much these days.