question about intel chipset fan!!!

hi i have a stock intel fan and heatsink on my processor, the same one that came with my processor and....

i was wondering which way the fan blows ( drawing air away from the heatsink or pushin air towards the heatsink????)

if it helps my processor is a 2.0 ghz p4 northwood 512 cache

More than likely it blows in.

hrmm thats kinda what i was thinking since i have a air guide should i follow the airguide and install a 92 mm fan and have it blowing more air into the case? or juss take out the entire air guide and install a 120 mm fan??

btw i have a antec TX1050B case the SOHO original one