Millisecond Forums

Hi,

I am trying to design a Dot Estimation Task (similar to the one there: http://www.millisecond.com/download/library/DotEstimationTask/ ). Basically, people are shown arrays of dots for a brief period of time, and then have to enter their estimation of how many dots they saw in a textbox. The thing that bothers me is that they have to click on the "next" button once they have entered their estimate, in order to get to the next trial. Because the experiment is very long, it would be much more convenient for them if they could just get to the next trial by pressing "Enter". 
I realize that they already can do that by pressing "Ctrl+Enter", but I was aiming for even more simplicity. 

Thanks for your help