How to put videos on a sony erricsson k800i?

I got a new sony erricsson k800 yesterday and I was just wondering how to put videos on it?|||just get 3gp file.|||To tranfer them from a computer you need a sony ericsson transfer cable plug it into your computer and in one of the folders is a video folder just drag videos from your computer in to it and they will appear under my items. Think they will need to be in mp4 format for this just search psp video 9 on the net and it will convert them to mp4 for you get the right setting and they will be really small files but have the same qulity