edit checkout field ?

Hi,

I was wondering how i can change the edit checkout field type “chooce”
where i made a blank line and a line with YES and a line with NO
that my customers can choose from, and that is working BUT on my PC
when i click the filed to choose either YES or NO i have to hold the mouse button
down to choose yes or no and at the same time roll up or down with the mouse to highlight either yes or no.
Is it possible to click the little arrow to pull down the answers possible and then click on time on either yes or no to choose instead of hold, drag the mouse up/down…

Dont know if this makes sense 🙂