When we generate a simple document in LaTeX using the times package (\usepakage{times} @ 9pt), the resultant PDF will contain NimbusRomNo9L-Regu instead of Times-Roman. (I know, this is because, LaTeX is renaming Times to Nimbus for embedding the font in PDF. Correct me if I am wrong.)
We can make Times-Roman to appear in the PDF (instead of NimbusRomNo9L-Regu) by adding some mapping in dvips configuration file (config.ps or config.pdf). How do we do this. Thus generated PS file when distilled using Adobe Distiller will show Times-Roman instead of NimbusRomNo9L-Regu.
I am searching the internet resources for a couple of days to find a suitable explanation for this. But I did not get a suitable answer. I hope somebody in this list can help me in fixing the problem.

timesis obsolete. You may use eithermathptmxor the newernewtxtextandnewtxmathto get roman font. – Harish Kumar Feb 12 at 23:10