How do i change Windows taskbar icon?

I play a game called The Powder Toy at school, but the teachers can tell if you are on it by looking at your taskbar. Is there a way to change the icon shown in the bar and the text?

http://i835.photobucket.com/albums/zz277/ddjsniper/untitled.jpgHow do i change Windows taskbar icon?
just set the taskbar to auto-hide

right-click -%26gt; properties -%26gt; check the auto-hide function in the ';Taskbar tab';How do i change Windows taskbar icon?
Why don't you just do work at school?



Or hide the taskbar, either one.