how to convert (RMVP to wmv)

Could anyone tell me how to convert RMVP to wmv....? (or any format could be read at Pockeet PC) I want to watch movie at Pocket PC! tvb now,tvbnow,bttvb4 ]' {' T r" {8 D
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。' v: H4 r! b& J3 n$ `4 @- l
I am very appreciated if someone could be help this issue