Modifying a jap/us dreamcast to covert the output to pal

I've got a jap dreamcast and i recently bought a copy of skies of arcadia on pal, i've got the boot disk and the game runs fine, except for, only half the picture is showing on screen.

I heard that you could modify a dreamcast by soldering two points on the main board some where. does any one know how to do this or another way of solving the problem.

Thanks

[fedro]

Try to use the Action Replay.
It let you boot in PAL or in NTCS

fedro_