it's very possible but I just noticed that there is no after market cooler. If you want very high clocks such as 3.5ghz+ with an E6600 you are going to need an aftermarket cooler to keep temps down. If you don't want to spend anymore money which is fine then Just downgrade the case as I was going to originally say the case was Overkill untill you said the extra you saved on vista made up for it so I didin't say anything.
The best cooler is a Tuniq Tower but the Zalman 9500 or 9700 looks the best and cools well enough.
I have an Artcic Freezer Pro 7 which cools well and I payed only 30 for it 3 months ago...now they are 70 bucks on the egg???? It's insane.
You can get one right here at chief Value for 28 bucks. That is all you will need.
So I would downgrade the case, take out the PCI cooler as honestly with that case your video card should stay plenty cool enough. Sometimes even they hurt a vid card more than normal becuase they crowd it's airflow.
Still I suggest an aftermarket cooler of somesort. The Zalman 9500 is a popular choice becuase of the way it looks and cools however there are other options regardless if people know this or not LOL.
I would just go with the Arctic Freezer 7 and then take out the thermal paste AS5 in your cart becuase the grease on that cooler is really good stuff as well, some say its even better.
So lets see if you weren't going to spend anymore money then.
Take out the AS5 and PCI fan and then add the Arctic Freezer Pro 7. Or you can just pay the extra 20 bucks and keep the case if you like as it's still a good case. The Aurora is a very good case though as well so either is fine.