There is a page for that sensor: http://arduino.cc/playground/Main/MPU-6050
Yes, you can use the gyro values, or the accelerometer values, or you can combine them.
You need pull up resistors of 4k7 to use the I2C-bus (SDA and SCL), and I can't see if they are alread on the board.
Any questions about that MPU-6050 page, just ask.