k610i screen sleep during poker

Hej, folks,

When I'm playing my Glu, "World Series of Poker," on my SonyEricsson
k610i, the screen keeps trying to switch down to power-save mode every
minute (unless I'm betting frantically).

I can't find the option to tell the phone to just leave the screen on,
ignoring battery-life concerns.

Does anyone know of such an option?

(Or do I have to bet every 2/7 offsuit?)

Thanks, folks,

ed