headlight removal and replacment Options

[mnwolftrack]

Sorry for the extremely noobie question...

How do the headlights come out? I am assuming the front bumper cover has to come off, correct? I am replacing a headlight that doens't have any mounting tabs anymore. I'm quite handy with wrenches and I'll just start digging into it at some point, but I'm sorta hoping there's a way to do this without having to pull the bumper cover.

Also, 2 or 3 of the headlights are missing the seals. Can these be installed after-the-fact when everything is reassembled, or can they only be installed when the front bumper is off?

Thanks for the help, and sorry again for the noob questions. I did do a search. I also searched for repair manuals in several local stores--no such luck