ASUS K40 AB cooling suggestions!!pls help!!

sorry if the explanation gets too lengthy but i just want to explain all the aspects

i have an asus k40 ab-x041d laptop which is an entry level gaming laptop

specs
AMD TURION RM 74 (2.2GHz 65nm)
320GB HDD
ATI Mobility Radeon HD4570,512MB DDR2
4GB Kingston DDR2 Ram
Windows 7 ultimate 64 bit

i have a laptop cooler cooler master notepal U1 too...

during first few weeks when i played too much Call Of Duty 4 on the laptop i realised that the notepal U1 is not enough for me thus i purchased two external fans and conected then to the notepal U1 pics here
http://picasaweb.google.com/lh/photo/mr4Msckg9_hQdwPbUo4D0A?feat=directlink

the internal architecture of the laptop is below


Red color is the main heatsink to cool all three major heat source( the CPU, chipset and the discrete GPU) the orange one is the CPU and chipset is located (GPU is under the red area), the slightly dimmer orange on the far left is where the power connector is and lastly the yellow area is the harddisk, rather warm.

the lower part of the laptop is shown in this pic
http://picasaweb.google.com/lh/photo/UJmo0PI1MOs83DsyBNCNPg?feat=directlink

from here on i will use "push in" and "pull out" modes for the fan orientation and these are regarding air refer this figure for better understanding
http://picasaweb.google.com/lh/photo/UWEj4F58D9_0EDipCKBGgQ?feat=directlink

note the areas 1,2 and 3 these are the vents in the lower side of the laptop
http://picasaweb.google.com/lh/photo/z2Ve1tiu3nX9_Gj1cf_QZQ?feat=directlink
in the area 4 (just below the heat sink) i attached the most powerful fan i had and it is in push in mode----and this works pretty good

the problem is for area 1 and 2

problems

the area 1 gets hotter due to power connector(which is connected most of the time)--i have connected the fan in pull out mode--thoght it would exhaust the heat out​

i dont know wheather to use the fan in push in or pull out mode in area 2 as
if i use the fan in push in mode it will push external dut particles in the laptop which will be harmful for the laptop(there is too much dust in the place where i live as there is a stone crusing zone near by)
if i use the fan in pull out mode(as currently) the laptop will have no place for the intake of air..which again becomes a problem
​

so basically i need suggestions from you guys to suggest me the best possible orientation for my laptop cooling pad and the external fans

thank you for reading and sorry if i made it too lengthy