Raster images in flash

at the risk of sounding like an imbicile, i’m going to ask:
does anybody know how to keep rasterized images clean, sharp and crisp in flash at all.

i have a design motif that requires me to use exaggerated pixelization and, well. when i import a raster image into flash, it trys to blur the pixels together making it smooth. the exact opposite of the desired effect.

so if anybody can help me. it’d be greatly appreciated

thanks.