R-2e check
Well, if your dad indeed does have that VirtualBox or something similar installed on his computer, I encourage you to check out Steve Evans' ShogiVar. It plays many of the games you might otherwise have a hard time getting access to. I also have a couple of other programs you might be interested in. I can send you an email, or perhaps upload them to a sharing site (they're pretty small). One is a three player variant and one is a four player variant.