Crop Marks

[Dr. Antonio Botelho de Sousa]

Sorry for insisting once more. But hte problem is this. I have the paper size 
correctly configured, and the Latex preambule also allright.
Now: when i preview the document with dvi the marks are correct and centered. 
When i preview postscript, or print the postscript file everything is out of 
order.
I send you a postscript file so you can see what i mean.
Thanks for your help.
Dr. Antonio Botelho de Sousa
Portugal

Ps file as example