Mga sir questions,

1. I installed Beat2x game yesterday and uninstalled it a while ago..right now my PokerTh and Tuxrace game are not working properly..it loads the game but shutsdown immediately.. yesterday gumagana pa yung PokerTH and tuxrace ko pro after i uninstalled the beat2x game hindi na sila gumagana.. meron po bang files na dinedelete ang beat2x na game kpag naguninstall ka? pano ko po mapapagana ulit yung mga games ko without the beat2x game?

2. Is there a way or i need to install so my n900 can play mp4 files(i have a downloaded film na mp4 yung format)? weird kasi yung n900 short film na default video na mp4 is playing normally..

Please guys help me...Thanks!!!