How do i use SLAVE on a flash canon speedlight 430Ex?

and setup instructions to use the flash wirelessly…i have a slave trigger that looks like this.. http://media.photobucket.com/image/slave…
how do i use it on my 450D (canon)
hellllllp

Your link is broken. If you’re talking about optical slaves then you NEED a slave that’s actually made for Canon EX [...]