You just have to beat all of the galactic grunts and you will be at the top.
In the galactic warehouse to the left of the Galactic HQ
You will need Galactic key and this how to get Galactic key you will need to talk to a Galactic team mate by the Galactic HQ.
It is located in veilstone city..where maylene is located
Galctic Headquarters is actually the Team Galactic Veilstone Building, but you'll need a Galactic Key to enter most of the doors.
go in the warehouse and go to top floor, and go in room 2 the right room
go to the top of galactic HQ then go all the way to the right
In the galactic warehouse to the left of the Galactic HQ
You will need Galactic key and this how to get Galactic key you will need to talk to a Galactic team mate by the Galactic HQ.
Team galactic isn't in Pokemon black!
you find it in the galactic HQ
Veilstone galactic HQ
after you get galactic key go to the HQ with sattilite dish go to the door
get to the top of christopher cool i mean the HQ he must be there
bad guy HQ (team galactic) is in Veilstone City
go and catch them
green portal
Its in the town of Veilstone