i just installed ubuntu 5.10, downloaded iso and burn into cd.

i have no problem installing it, but now i have a few problem configuring it. Please provides step by step guide will be the best,

1) I have successfully configure the linksys wpc54g to run using WEP.
my problem is, how do i configure it to use WPA? I need to configure in WPA. And how do i load the driver when startup, what i do now is everytime startup, i type "sudo modprobe ndiswrapper".

2) i want to play, mp3, divx and etc in totem, i have configure according to this website https://wiki.ubuntu.com/RestrictedFormats, but it display error of "dependencies error"

thank you.