I believe that games for the vu use java...and therefore cannot be full screen. if the game is java based...then the soft keys at the bottom are always gonna be there. thats incorperated in with the phone and cannot be worked around...that i know of. if it can, its new to me and i too would love to know how. lol. the arrows will always be there and u learn to forget about them and just deal with it.
Visit the "hacks" section for FULL SCREEN games/apps!!!
But the Att Social Net and the Email app are both Java aplications and they are fullscreen, so I suppose that never say never. I think there's a workaround, but it should be on the game or app:) So let's ask Skoot(the creator of the ATT Social Net tool;)