When I click detect, it says another display not detected. After trying UltraVNC, I tried RealVNC, which didn't do much good. But then I found TigerVNC, and it's so close to displaying my PC properly and I can see the mouse, but the refresh rate is so slow it's almost unusable!
It's strange, if I scroll down a page it refreshes just fine but if I'm just typing here for instance, it takes about 30 seconds to refresh. More problems... Wait now the refresh is working fine? I don't get it. Maybe if I poke at things long enough I'll figure out what is going on.