The process for cooking rice should not change BUT the amount of water required will. Short grain, long grain, medium grain all require different amounts of rice. Also, this process does not apply to glutinous (sticky) rice. See this post for different ways to cook sticky rice. For Thai food, always use jasmine rice from Thailand (also known as "hom mali" rice). When you open a bag of jasmine rice, it should have a wonderful jasmine aroma. To learn more about jasmine rice and how to tell if it's genuine jasmine rice, watch this Jasmine Rice 101 video. No matter what you do, don't use instant rice or rice from a box or parboiled rice!