If you have xbox or ps3 then you buy it at the online store. If you have wii, you can't yet.
at the menu
The first strike map pap has been out and can be purchased at the market
Febuary 1st
no you buy the whole Map Pack or nothing
no you cant
March 3rd
kowloon from the first strike map pack
First Strike
The first strike map pack cost $15.00
The Name of the first map pack for Black Ops was First Strike, but the name of the second map pack is Escalation. You will need the name to locate the Add on at the PlayStation Store. The Store is back up and the Escalation map pack should be able to be downloaded starting tomorrow afternoon June 3 2011
15$ or 1200 Microsoft points
Yes it does.