north of route 209 the lost tower resides. on the top floor after battling trainers and wild Pokemon( I would bring dark Pokemon or bug Pokemon talk to a old ladie she will give you HM04
you get them in a cave hidden under the cyclist road its hidden north your gonna need cut and i think rock smash and strenght
Strenght is an HM move, teach it to one of your'e pokemon. to use it just select your'e pokemon and select strenght.
in lost tower . it is on route 209. when you see the 2 ladies at the top talk to them. i /think/ you might have to battle them. i doubt it though.
House above Nimbasa City Pokemon Center
With hm strenght.
Pokemon diamond
To use strenght outside battle you need: A Pokemon that knows strenght or the HM so you can teach it to a Pokemon The Mine Badge from Byron in Canalave City. Have a Pokemon knowing strenght on your team and go to a place where you need strenght. Press A in front of the big, grey boulder you want to move and use strenght. Now when you walk, you'll push the boulder in front of you. You don't have to use strenght for every new boulder, you'll only have to re-use it if you go in another room.
Pokemon diamond Pokemon diamond Pokemon diamond
you cant be a Pokemon in Pokemon diamond
look around olovine, there will be a sailor in a restraunt
you aquire it later in the game
She is not in Pokemon diamond.