Help!!! how to open .mdf n .mds files?

Cchen

after dowload games, how to open it's .mdf n .mds files?TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。6 @: @! e$ a& B1 t: `
i cant open it?
3 a+ E, K; L5 D7 Vpls teach me...
3 z4 C6 Z  |9 ~, T" {3 l  U, N0 x公仔箱論壇tq...