Do you know what it's called?

There was this T.V. show I saw once and it had this brother and sister that were looking for their father. I remember that the sister was in a wheelchair and she had shoulder length brown hair and the brother had longish brown hair. Anyway, the episode I saw was one where the brother went back in time to the Vikings. Well, actually, he was in Viking mythology. If I recall correctly, he went through a computer screen to get there. o.O Has anyone ever seen this show? If so, do you have any idea what it's called? :confused: