If by "skyrim online", you mean The Elder Scrolls Online, than most likely not. MMOs are almost never released on anything but the PC platform.
Skyrim will be released on the Xbox 360, PlayStation 3 and PC - the same as Oblivion. Skyrim will not be on the Wii.
No there is no multiplayer or cooperative modes on The Elder Scrolls V: Skyrim. It is only a solo game like most RPGs.
Yes. Skyrim is also out for PS3 and PC.
There is no way to use your existing Xbox 360 controller on your PC. However, Microsoft have released a PC controller which is a Xbox controller.
As I recall, there is no prize offer to states if you pre-order Skyrim and get a free Xbox 360.
Dawnguard , the first DLC expansion, was officially released for the Xbox 360 on June 26th, 2012.
No, you cannot.
There are actually no codes for Skrim on the Xbox 360. The only codes for Skyrim are on the PC and they are called "Console Commands."
Nope. Skyrim is for also Microsoft Windows and PS3 as well.
Skyrim is available for purchase on the Xbox 360 (retailing at $60). Other than a physical copy, you can also purchase the game on Games on Demand in the Xbox Live Marketplace.
You can play any online game without Xbox live.
PS3, Xbox 360, And the PC.