HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\FontSubstitutes
Now double click on "MS Shell Dlg" and put in the font style you want as the value.
Then double click on "MS Shell Dlg 2" and again put in the font style you want as the value.
After you are finished, restart your pc. Just a note, make sure you enter a font that is installed on your computer, to see a list of available fonts, go to C:\WINDOWS\Fonts .
Hope someone will find this useful