RasPi overscan settings on the tiny screen

On this screen:
http://www.amazon.com/gp/product/B0045IIZKU/ref=oh_details_o00_s00_i00
(3.5 Inch TFT LCD Monitor for Car / Automobile)

first you have to edit boot/config.txt:

sudo vi boot/config.txt

pull up a vi cheat sheet if you don't know how to use it.

the overscan settings look OK if you set the following:

Uncomment "disable_overscan=0:"

Uncomment the overscan settings

Set the following:

left: 6
right: 2
top: -17
bottom: -10

this should be fine.

(by uncomment I mean remove the # from the beginning of the line)