How can you get to Dialga at the top of Mt coronet in Pokemon diamond?

please follow my direction--> fly 2 OREBURGH CITY & heal now have your Pokemon that know SURF & ROCK CLIMB with you then gather up alot of MAX REPLS & a few ESCAPE ROPES & pokeballs now head outiside and hop on your bike & put it in fast gear now go left & up the steps & down the steps again & up the sand slope & right inside mt coronet before you surf across use 1 max repel now surf across then go around & rock climb up & head up the steps go LEFT,LEFT, & DOWN go up the steps & across the bridge then down on the right side & up on the left go up across the bridge again & down both sets of steps & thru the doorway continue on you'll come to a 2 way go LEFT,LEFT, & DOWN & outside in the snow go right & up rock climb up and go left up the steps & thru the grass until you see the doorway go thru it & walk back & rock climb up & take out the grunt in your way..when done go on and take out the next grunt afterwards go down the steps & outside again take the steps & go all the way right face left & rock climb up & down the steps & over the humps of steps then go around & right inside make your way & battle the grunts in your way..afterwards go on until your outside on the very top of the SPEAR PILLAR now go fight the grunts but hold up here comes your rival to help you out after the double battle go on and fight CYRUS afterwards take 2 steps & SAVE now go battle & catch DIALGA when doen SAVE again just in case you drop your DS now go pick up the LUSTROUS ORB & give it to dialga to hold it's behind HIM or HER...now turn around and walk back down & inside where you came out & use your ESCAPE ROPE..glad to help..veronica