[pdftex] No clipping??

[Andrew Mark]

Hi,

Is it possible to use \includegraphics with bounding box modifications like 
I would in latex. Right now the images appear to be placed and sized 
correctly but they aren't clipped and spill all over the adjoining text. Is 
this a pdf problem, something I'm doing wrong or is pdftex really unable to 
clip graphics? Unfortunately I am unable to manually modify the bounding 
box values in the images.

-Andrew Mark