Problems with displaying MS Sans Serif font

Hi, I have one application, a Windows app called ZET that does not display the MS Sans Serif font.
I have this same app installed on a different distro, Salix, and it has no such problems.
I have tried all kind of things, one of which was trying to update Wine to 1.7 (complains about broken apps so no luck there)
I have checked the Wine Registry and the font is definitely listed there.
So I am stumped.
Any help would be appreciated.
Paul.