Emulator Failing

the graphics on this emulator are terrible, and i cant get any other emulator to work. what should i do? heres a video of what im experiencing:

http://www.youtube.com/watch?v=5joauR2LkfU

What are your computer specs?

its an acer travelmate 2480 with a intel celeron M 1.86GHz and 512 RAM

I don't know what kind of graphics card you have but I think that your computer's to weak and/or you need to mess with the graphics settings. Also, Chankast hasn't been updated for many years so you would probably be better off trying NullDC or Demul.