Millisecond Forums

Hi, I am new to Inquisit and am having a bit of trouble getting started. I am after a Visual Search task, however can not find something similar in the Millisecond test library. The visual search design I am after involves a search screen with pictures (i.e red/blue squares/trianges) randomly arranged on the screen. Participants are asked to indicate as fast as possible whether a target picture is or is not present. Any help would be greatly appreciated! 

Thanks!