I was playing FSX on WinXP SP3 and suddenly common dialogs font looked weird. Seems the problem is my default system font (MS Sans Serif) was erased, so all dialog text items that use this default font display text with big letters, usually they do not fit in the room and messages are trimmed.
I tested some programs that use the default font by using MS VS Resource editor and XN Resource editor. In all cases, default font is "MS Sans Serif, 8pt", but when I click on the fonts combo, the font is not shown. I have other "similar" fonts: Microsoft Sans Serif, and MS Serif, but not exactly "MS Sans Serif". I don't know if this is the same font as "Microsoft Sans Serif". Anyway, if I go to regedit, I do not have fonssubstitution entries. Any idea on how could I fix it?