Digital BW, The Print

Hi all,

well,  it was easy to center an image on a sheet of paper with the 
PC version of IP 4, it seems nearly impossible to do so with the 
IP5 Mac version (at least on an 7500 printer).
Though I click the "center button" the image will always print 
excetric to the top and the left margin of the paper. (That doesn´t 
appear with the epson driver, so I suppose, its not a printer- but 
an IP5 problem).
Any solution recommended ???
TIA
Bernd