you do not need to go into the HQ
bad guy HQ (team galactic) is in Veilstone City
They are at their HQ in Veilstone City.
In the galactic warehouse to the left of the Galactic HQ
Cyrus gives it to you in the team galactic HQ in veilstone city.
You go to Mt.Coronet (Enter form Hearthome city side) and fight team galactic at Spear pillar
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.
Cyrus of Team Galactic will give you one when you defeat him in the Veilstone City Galactic HQ.
It is located in veilstone city..where maylene is located
after you get galactic key go to the HQ with sattilite dish go to the door
Go to the Team Galactic HQ in Veilstone city
its in veilstone city and its quite big - u cant miss it.