if you look in the default code you will see lines like
Code:
pwm01 = p1_y
pwm02 = p2_y
pwm is the term for each of the moters. p1_y and p2_y are joystick 1 & 2 on the y axis. These give you a value between 0 and 255, with 127 being neutral. To adjust the sensitivity you can take the joystick input and apply a little bit of math and what you set the motors to will be less.
I will give you a link to a thread I posted in a couple of weeks ago on this.
Edit:
http://www.chiefdelphi.com/forums/sh...ad.php?t=61929