found it last week in Cydia.....just had the time now to give it a try.
It costs $5 but works like a dream. Just install the Cydia app, download the desktop piece and take both devices (yes, iPhone, iPod Touch as well) on the same wireless network and start the iPad app.
Now start iTunes, et voilá, the iPad shows up in the list and you can do the full operation from iTunes, just as if you would have connected the iPad via 30pin-cable.

It costs $5 but works like a dream. Just install the Cydia app, download the desktop piece and take both devices (yes, iPhone, iPod Touch as well) on the same wireless network and start the iPad app.
Now start iTunes, et voilá, the iPad shows up in the list and you can do the full operation from iTunes, just as if you would have connected the iPad via 30pin-cable.
