When setting up XBOX for 480p 720p and 1080i, if i have a high definition tv should i click yes on all three? or just click yes on the one that coresponds with what game i am playing at the game, like say GTA supports 480p, so just click on 480p? cause when i had em on highlighted, i played GTA Vice City, and the game was almost unplayable, there was WAY too much pop up, cars and people would just appear right in front of me practically. anyone else had this problem with GTA Vice city for XBOX running on a HDTV?