wine users - Jul 2006 - Tiny font on the menu bar of programs running under wine

Hi, I wish someone could help me to change the menu bar fonts of Origin
7.5 running in Wine.
The program works fine, except for the font of the menu  (file, edit,
tools, ....) bar that are tiny.
How can I make them bigger?
I'm running Kubuntu Linux, on a Dell Inspiron 8200
Thanks,
Marco