It should already be installed on the MBP, open iPhoto and there should be a screen that opens saying "Welcome to iPhoto '08/'09". If it says "09", then it's iLife '09 (if iPhoto has the Facebook icon in the bottom right hand corner, that's another way to tell that it is '09).
If it is the latest MacBook Pro (unibody, aluminum with the black border around the screen) then it should have '09.
If you just got it, it comes with iLife 09, I bought my refurbished 24" iMac in Feb and it came with iLife 09 so anything bought after that for sure I would assume comes with 09.
Thank. I have checked my MPB is pre installed iLife 09. But how about the second disc (application installation DVD). How to define it is contained iLife 09. I have read the disc, only I can click install, it doesn't mention what program inside.