Actually, there is no problem... it's just I need someone from Alwil team to send me "MS Shell Dlg" font, 'cause I went to hell and heaven and couldn't find it... please!
You couldn't find it, because it doesn't exist. There is no real "MS Shell Dlg" font. This name is just an "alias" - if this font it used in program resources, Windows automatically change it to the current system font (so, MS Sans Serif will be used on English Windows, MS Gothic on Japanese Windows, etc).
In fact, it's just a theory that MS Shell Dlg would work for the skins - I am not sure if this alias would be substituted even for the skin files, just as they are for "ordinary" dialogs; that's something that would have to be tested. The problem is that the Skin Builder won't let you select a font that is not installed on your system... so some serious hacking would be required.
Right now, we have special versions of the skins for Japanese language. They are the same as the "English" ones, just have a different font. If the skin filename has a
[Jap] suffix, it will be loaded automatically on the Japanese version, instead of the original one.
Soon, the same will apply to the Russian version - the skins can use the same font, but with the Cyrillic charset. So, there will be separate versions of the fonts for Russian avast!.