Figure out a dollar value for your accomplishments and set a goal for how you would like to be compensated. Be realistic about your target amount. The word "zillion" should probably not be included in your request. You may not always get the bull's eye, so be flexible. Some companies may be willing to give you perks instead of extra pay. Wouldn't it be nice to have an extra week of vacation time? Or how about a 24-hour masseuse? Flexible hours or telecommuting might be nice（it's no massage, but whatever）. Such rewards don't cost companies much, but they may be extremely valuable to you.
When you've done all your research and you know what you want, set up a meeting with your supervisor. It doesn't have to be a secret why you are meeting with him/her/it（hey, I don't know what your supervisor looks like）. You can say that you'd like to review your job performance or assess your contributions to the company. Some experts suggest a written agenda is appropriate, so that your boss can be prepared as well.