You need to have a look at this pdf:
http://usfirst.org/uploadedFiles/Com...t_Assembly.pdf
Unfortunately there are no step by step instructions so you'll just need to go from what you see on the 2nd page. Make sure you examine the diagram carefully. (not all the parts are listed)
Thanks,
timytamy
PS:The two "gyro" are actually called servos
EDIT: Vivesrock beat me, but the links are the same