Stupid taskbar that appears when I play games

[Selena]

I have a treo 700w and i've installed text twist. However when I try to play, the text is distorted because it doesnt fit my screen once you add in the start bar at the top, and some dumb game taskbar that shows up whenever i play any other game besides bejeweled.

Is there any way for me to remove at the very least the Start bar when I play games? its quite annoying when I try to play and I can't even read the words that are there.

When I play bejewled I don't have this difficulty. Any way to fix this? My friend doesn't have this problem on her 650 either.