No, Achievements can be earned online or offline. If you join xbox live with the same account, the achievements get transferred to the online account.
It depends on how long of a membership you want...a 3 month xbox live membership is just $19.99 where a 12 month xbox live membership is $49.99...
it is pretty much the same thing. Gold membership it a type of Xbox Live membership and has a charge.
You can earn achievements while not connected to XBOX Live and your console will keep track of your gamerscore locally. However, your gamerscore will not be reflected on xbox.com or on any other console until you connect to XBOX Live.
With an a Xbox Live membership I think so, without a membership maybe not.
Yes, a membership is required for Xbox Live features to work for the console and account.
No you need xbox live for certain achievements!
They are from the pc, online xbox live account. What ever achievements you earn from that game goes to your xbox live account's gamerscore and be classified as "Halo 2: PC".
xbox live membership allows you to play online games and comunicate with your friends
no
yes your membership will go with your profile but you cannot go from xbox to 360
Well first of all, did you buy a Xbox Live membership card? If yes it will on the back of the card.
Yes you can, but you have to buy an gold Xbox live membership.