Call of Duty 4 does not have a zombie mode
No there can not be 4 players on Call of Duty Black Ops Zombies on PS3 offline.
everything is
yes and the later call of duty PS3 games also
Call of Duty 4 is a popular first person shooter game on the PS3. It is not possible to play against bots.
The mp5
Yes you can
Yes there is a Call of Duty 4 for the PS3, depending on where you live, go head on down to your local game store. (e.g. Thunder Bay - EB Games) You'll probably be able to find a cheap used/new copy of Call of Duty 4 for your PS3.
CoD 4 MW
If there isn't a download on the store with call of duty, then no. You can play call of duty 3 onwards on the PS3.
no no
no