You can't but there is a hack/cheat to do it.
Well in Pokemon black and white its no longer a HM its now just a TM if its not working in battle your game is messed up
You use the Rock Smash TM
you can not battle the kanto champion in pokemon white but you can in the sequel
No you cant because Pokemon White and Black has new Pokemon that Pokemon battle Revolution cant use
no you cannot because the rock has a person next to it and if you remove it it will glitch the game up.
I have yet to play Pokemon Black or White, but if it is anything like Diamond or Pearl, I believe your Pokemon with the rock smash ability would have to be your main or your starter, and then you could open your bag and click it, and hit use rock smash? I can't exactly remember, it may be something like that though. Don't give up.
well u have to had your forth gym badge.
yes
If you have Pokemon White Virsion then you can in white forest, if you have Pokemon Black Virsion then you must trade it from Pokemon White
Strangely, Rock Smash is not a HM. It is a TM. The girl at the entrance of Pinwheel Forest gives it to you.
Yes
Yes in Pokemon White after you defeat the last member of the elite four you are forced to battle Zekrom. You battle Reshiram if you have Pokemon Black.