Re: wuts side air duct?
That URL doesn't work, but it is best if a case has one, yes, though all cases have fans nowadays, and so must have air ducts or fan holes somewhere to let air through when fans are connected.
If your getting confused thinking the small air ducts are any more important than standard fan grills, then no. So just adding fans would do in the grills where they can be placed.
Abit IP35 Pro / Q6600 G0 / Zalman 9700 / 8800GTS 640mb / 4x 2GB Corsair XMS / X-FI Xtreme M / 1x 1TB / Antec 900 / Logitech Z-5500 / Samsung 20inch