Composite Video output configuration

[Issmail]

Hi,

i'm trying change the video configuration mode. It seems that the mode is PAL (625 lines), but i need NTSC (525 lines). Someone know where or what is the file configuration about this?
I'm using Arch Linux version 2.6.35-6-ARCH+.

Thanks. 

[Fabiano Traple]

This worked for me.

fbset -g 720 480 720 480 32 -t 36075 64 64 32 32 40 3