Since it is summer and i live in a hot mediterainnean country (Greece) i have my PC case open all the time to keep my temps low. The problem is that the machine is collecting more dust ti its inside which is something that i dont like at all (its dangerous too i believe). How can i clean the inside of my PC occasionaly WITHOUT putting it in danger? (please dont tell me blowing air inside it with some kind of contraption, i dont have anything like that).