ATX Casing

[geek hoodlum]

Casing: Trendsonic IRock IR11A ATX (black)

1x CPU Fan - the airflow is going to heat sink of CPU
1x Chassis Fan 8cm (side) - the airflow is going to CPU Fan
1x Chassis Fan 12cm (front) - the airflow is going to Hard Disk and in center of chassis

Available vents:
1x Side Vent for 8cm Chassis Fan
1x Rear Vent (below PSU Fan) for 12cm Chassis Fan

1) Any recommendations?
2) Do I need to add chassis fan/s for the available vents?
3) And if I add chassis fan/s, what would be the airflow direction?

Here's my machine:

Hardware Platform:
   AMD AM2/AM2+

Software Platform:
   Microsoft Windows

Operating System:
   Windows XP Professional Version 2002 Service Pack 2

CPU:
   AMD Athlon 64 X2 7750+
   2.70 GHz True Dual-Core Design
   3.0 MB Total L2+L3 Cache
   Socket AM2+ 95W

Mainboard:
   MSI K9N6PGM2-V Micro-ATX
   Realtek ALC888 Flexible 7.1-channel audio
   AMD Cool'n'Quiet
   2000MT/s for AM2+ CPU
   2000MT/s and 1600MT/s for AM2 CPU

Memory:
   Kingston 3 GB DDR2 800
   DIMM0 - 2 GB PC2-6400
   DIMM1 - 1 GB PC2-6400

Hard Disk Drive:
   Samsung 500GB 7200rpm SATA 3Gb/s

Video Card:
   Sparkle GeFORCE 9400GT (PCI-E 2.0) 1GB
   DDR2+HDTV+CRT+DVI-I+HDCP

GPU:
   NVIDIA GeForce 9400 GT Graphics Engine

PSU:
   TREND EM-500W Switching Power SUpply (ATX)

[Calum]

I'd advise adding a rear exhaust fan (the 12cm one below the PSU).
Your system shouldn't run very hot anyway, but an exhaust fan is always a good idea.  It should blow out the back of the case.
Hope this helps.

[geek hoodlum]

Alright, thanks for the advise. Maybe I'll remove 1x Chassis Fan 8cm (side) and add 1x Chassis Fan 12cm (rear) for the exhaust.