almost same as mine, mine is like yours screen shot here, I put one big fan in front to suck in the air and a small fan a 3x3 cm fan in the back of the casing to throw away the heat from the processor.
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PROCESSOR: AMD Athlon 64 3000+ @1.8Ghz RAM: Kingstone 512MB PC3200 MOBO: ECS Nforce4 A939
VGA: Pixelview Geforce 6600GT (Golden Limited Edition) 128MB OS: WinXP pro Service pack 2