glDrawPixels + glPixelZoom

on my laptop . bliting an image using glDrawPixels when glpixelZoom is more then 1 . will anti alias the image
( does not happnen on dekstop ) desktop is a NVidia and laptop where problem happens is ati 9000 mobile.

i tried everything i could think of . just wondering if anyone knows a way to disable this from happening so the image is "as is" when zoomed. when using glDrawPixels

you'd have to turn off the filtering

yea but how ? i mean i tried everything ovbvious. im thinking its just the way the ati driver does it