Originally Posted by SOSTrooper

Dust is going to get in no matter what. From looking at the interior of your case, it doesn't look like you can mount a fan towards the front of the case for intake. You can probably get away with just using some putty and stick a 120mm fan inside the case for intake, if you want to do it the ghetto way. If you can get around to it, maybe you can open the side panel of the case up and snap a sharp picture for us to look at? We can probably help you figure out ways to add fans to efficiently cool your system down.