pass the missions
you cant but but if you can wait till august 8 2011 it will bet is Pokemon shade of darkness version and in Pokemon crystal light version
go across the water from the light house
South-west of the light house.
Use the elevator at the 1st floor.
You can't take it you have to catch a mareep evolve it into a flaffy then evolve it again
secret potion. you can find it at the olivine city in that medicine shop.
The Light house is at Olivine city. First use HM Fly and fly to "Olivine City". When you get there walk down to the bottom right corner of Olivine city and there's the light house.
Go to that little island thing were you get Shuckle from and get some medicine from a house there and give it to her so she can heal her Ampharos.
Pokemon ranger tracks of light
if you mean the medicine for 'amphy' in the light house, go to the medicine man in cianwood city he will give you a 'secret potion'
you can get it by getting a pichichu in pearl trade it to heartgold
It's the last building to the far right, In front of the water in Olivine city