THE STUDENT PILOT REPORT THAT WHILE ATTEMPTING TO LAND ON RUNWAY 15, THE AIRPLANE DRIFTED LEFT OF THE RUNWAY'S CENTERLINE. THE STUDENT PILOT DECIDED TO GO AROUND. DURING THE GO AROUND THE AIRPLANE COLLIDED WITH A FOUR FOOT SNOWBANK WHICH RAN ALONG THE EDGE OF THE RUNWAY. THE PILOT REPORTED THAT AT THE TIME OF THE ACCIDENT THE WIND HAD BEEN OUT OF THE SOUTH AT ABOUT 8 KNOTS. HE STATED THAT THERE MUST HAVE BEEN A GUST OUT OF THE WEST.