> Well, that's Windows' handling a rename......however it's still a valid filename (it
> won't be if you try to use for example \:<>|)
Speaking of Windows, one of the "quiz" games in MAME (the name eludes me at the moment) has a ROM name that ends with a period, which isn't legal in Windows.
If you unzip the set, Windows removes the period from the end of the ROM name.
GroovyMAME support forum on BYOAC