pokemon diamond

A little help here. Though I usually prefer to roam a lot and find out for myself, for the sake of this lazy feeling I'm having, can someone please tell me how to find Palkia?

You cannot capture palkia in diamond.You can see a picture of it in a book to add it your pokedex in Celestic Town.

...well that's just horrible...but thanks Navykidx, now that I know, I'll stop trying so hard to find it.