You just use the regular disc
Shivering Isles is an expansion pack to Oblivion, and can't work without it.
Shivering Isles is an expantion pack for Oblivion.
You get the Shivering Isles expansion but the ONLY DLC it comes with is Nights of Nine.
Felldew can be found in the Shivering Isles expansion pack (there are "hollows" whcih have felldew in them)
The Elder Scrolls IV: Oblivion is not included with the expansion pack, but you must have the original game to use the expansion pack.
Shivering Isles is an expansion pack. It is not included with the original base game, but is included in the GOTY edition or the later re-releases like the 5th anniversary and TES Anthology.
if it is the knights of the nine or shivering isles the disk is only meant for PC
I haven't heard of any in Morrowind, I don't think there is any. In Oblivion, you need the Shivering Isles expansion. You can get to it if you play the Mania side.
You can't buy any in the isles
No, the Shivering Isles is not written into the original version of the game. You can go there if you get the Shivering Isles expansion on a separate disc, the GOTY version includes both official expansions.
you need to download or buy the expansion. if you did, you will get a quest message after 12 hours of gametime next time you play.
You can not buy the whole game on Xbox LIVE, but you can purchase the expansion pack: Shivering Isles.