If your talking about Diamond and Pearl you go to valley windworks on a Friday.
First you have to find a Magby and evolve it and then trade that evolve Pokemon and it will evlove -.-'
first you have to get piplup and then evolve it to get prinpulup hope this helps:)
go to pokemon box, find the pokemon you want to evolve and click the green button that says evolve
First, you have to find a bunery, which is found in eterna forest. After that, you have to evolve it by happiness.
If the Pokemon is at the lvl to evolve you go to Trainer HQ and click my Pokemon find the Pokemon and click evolve me.
You can't evolve Pokemon in the game u have to find them and catch them
you can't find shelgon in saphire you have to catch a bagon at meteor Falls first then evolve it
check serebii.net you can find how to evolve all of the pokemon.
You can evolve an evee which you can find in Goldenrod city.
First you have to open your bag and find the stone you want to evolve with. Then press it and choose "use". Then press the Pokemon you want to evolve.
you haft to talk to Dawn's sister and find Sentret first and evolve it ,but you have to national Dex first
here are the steps. 1.find the son that evolves the pokemon you want to evolve 2.get the stone from your bag and click use 3.give it to the pokemon that you want to evolve [has to be a pokemon that can only evolve by stone.] the pokemon should now evolve hope i helped.