HELP: NEED PROGRAM THAT CAN CONVERT A RM/RMVB FILE.

hey do you guys know of any good programs that can convert a RM/RMVB file to AVI, MOV, MPG, or something of that sort? I tried to play the RM file on my realplayer and it works but it's subtitles are completely messed up so I might as well convert the file to play it on another player. Thanks so much in advance.