how to merge rows in datagrid view

Question

hi friends i want to develop a quiz engine in c# windows...in that i want to load questions and choices in the datagridview...in order to do this i want to merge rows and then load the question and choices...all these things is to get some sort of aesthetic feel to my application...can any one help me in building the quiz engine in windows forms using datagrid...no prob if datagrid is not present...but i want to develop a quiz engine in windows(c#)....