Try walking the room with your baby holding her stomach down in your arms. The pressure from your arm on her stomach may help to move gas along. Sometimes an over the counter remedy can help. Mylanta makes a medicine to help relive gas bubbles in a baby's digestive tract. These remedies are temporary, however.
Chamomile tea is another remedy.
The chamomile will help to relax your baby and stopping the crying. Try taking your baby for a ride in the car or for walk in the stroller outside. A parent may feel that nothing they do is helping. Patience is key. Trust me when I tell you, just the fact that you are attending to your child and making the effort to comfort him or her means the world to that child.