Need for speed most wanted - performance tuning help!

i have been playing this game for a while when i realized i could use performance tuning.

I need to know:
what is setting 1, setting 2, and setting 3?
what is the diference between steering and handling?
and finaly, what is Aerodynamics? what does it do?

 

plz reply... im confused.................
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handeling is how good ur car grips the road. steering is how good the car takes the turns and arodynamics is well i dont really know what that is but if u turn it all the way down the car will accelerate faster

 

if u want the viper to go 288 put the steering at +5 handeling at-5 brakes at +5 ride hight at-5 aerodynamics at -5 nos at +2 and super charger at +5 and leave the transmission and tires at stockand to test it out go into Campus Interchange go 4 a little bit and there will be a streight away

 

aerodynamics is when something is built (like a car)and then tested on how well it goes through the air (wind tunnel ect,)

 

i knew that just didnt know how to explain it