applying lights is easy:
load winFX
go to "special WB effects"
select "enable lights"
then "add light. . ."
the coordinates have 0,0 at the top left hand corner of your primary monitor, and are in pixels (so botton right is 800*600 on a 800*600 screen). select a colour, and hit apply
if you find that your WB skin looks a lot darker, it isnt just you. several people have posted this on the newsgroup, me included. however, the cool factor is increadible!