2 New Ideas To Low Temp

Question

I´m trying to lower my mega180 temp, and I´ve followed the instructions in this post "Easy" way to lower MEGA 180 CPU Temp
But I´ve some new ideas
-Cut de left side of the case an put here a grating like here http://www.hard-h2o.com/guiamodding/rejilla-fuente.html (well, in this example they use a power supply)
-Then, do something with the power supply, I´m thinking to do this --> http://www.hard-h2o.com/guiamodding/ventanafuente.html but I´m not sure because the PS only has 200W and I´m not sure if in the future I will need more, so I´m planning to buy a new one
HAS ANYONE PUT A NEW PS IN HIS MEGA180?????????????
(sorry if i´ve made any mistake writting, I´m not english)

Answer 1

As I said before, I´ve trayed these 4 things (is the basic to do if you want to low temp)
My temperatures are:
Windows--> 45º max
Playing WOW max graphics-->60ºmax
I´m trying to low the max temp while I´m playing. A LR is so so drastic to me... I think it would be impossible to do in the case space, I would have to take out the PS...  
For the moment I´m planning to make a cool mod, and to reduce the max temp at the same time. Has anybody made something similar?