If referring to the map packs for Halo 3, (I'm guessing) they are 800 Microsoft Points. Microsoft Points can be bought in many stores, such as Seven-Eleven, Supermarkets, etc... 1600 Microsoft Points costs $20.
possibly 160 Microsoft points
The Escalation Map Pack on Xbox Live is priced at 1200 Microsoft points (US)
Service packs.
No. Microsoft does not create service packs for their systems once they enter the Extended Support phase. Service Pack 3 will be the last service pack for Windows XP.
Not any more, ea have suspended buying packs with microsoft points at this time of writing!
It Depends where u from in South Africa its R150 In the USA it is $15 at PSN Store or 1200 points for microsoft
Yes
Most likely somewhere between 400 - 1200 Microsoft points.
Windows Update
On ps3 there isn't any you can buy yet, but on the super awesome xbox 360 you can buy it for 1200 Microsoft points, 12 dollars, 14 euros, it includes 4 multiplayer map packs and 1 zombie map It's 1200 Microsoft points which is 12 dollars. The map pack it's self is 1200 Microsoft points but if you have no points you can only buy the in lots of 2000 for $33.00 very sneaky Microsoft
If you're using Microsoft Windows 7, you can find free theme packs (including some nice desktops) by Googleing "windows 7 themes" and click on Microsoft's own page. Otherwise just Google 'free wallpapers'.
It is a code you can redeem that you bought from a store on Xbox Live. Then you can purchase items for map packs, games, trailers, and much more. You can also purchase items for your avatar.