Adobe reader error

Hi I get the following error when opening ADOBE documents from a particular person.

ADOBE
Cannot find or create the font "Arial Narrow". Some characters may not display or print correctly.

If I forward the mail to my other PC the Adobe document opens without any problem. I get dots and dashes instead of text.
I am using WinXP PRO with SPII
Adobe reader 7.0.8 ( had the same problem with earlier versions)
Open Office ( have seen the same problem on another PC running MS Office}