Do NOT waste your time on these, they DO NOT work!
I was lire something on some website,(I don't remember it, I was half-asleep that night) it a dit in Pokemon Diamond, Pearl, and Platinum that getting Acreus was as easy as breeding Dialga, Palkia, ou Giratina (depending on which game toi are playing) with a Ditto.
1: Ditto plus any pokemon always is that pokemon- with the exception of Manaphy.
2: Legendaries can't be bred.
The same site a dit that Carnivine plus Staraptor is Shaymin.
1: Legendaries can't be obtained this way.
2: I got a Tropius this way.
Remember don't waste your time with these!