You can't play online spiltscreen at all but you can on call of duty black ops.
No
$5 a day
No, it is free to play online.
No
No.
Play online
of course.
You could search online for CoD Modern Warfare 2 for PC Otherwise Play or Game should have it
No. There is no co-op campaign in Modern Warfare, local or online.
Yes
no
Yes, unlike xbox.