Check out the app Slashtop in the app store. Not only is the the cheapest screen sharing app I've seen but it's the best I've downloaded. It uses a really awesome touch interface which so far for me works well with skritter. It also has the iPad keyboard support and plays sound, so you can skritter on your iPad in a different room. If you don't like using your finger, pick up an iPad stylus. I just got one called istroke that has more of a pen feel(and includes an actual pen) than the pogo's I've used.