[easy Question] Set w910i camera to capture maximum movie length

hi
i have a friend who has got a w910i and he is very bad with new things :) the worst part is he is remote, so i cant get my hand to his mobile phone.
he just called me and want me to set his camera to capture maximum length of movie, instead of 1 minute.
im a nokia man and im not familiar with sony erricson options. but i know its very simple setting.

can anyone give me a step by step guide to do this? so that i can give him instruction by phone call?

regards.