How do I get acces to the expansion packs of the elder scrolls IV: Oblivion?

I've bought Oblivion game of the year edition. But now's my question: how can i get in the storyline of knights of the nine or shivering isles?How do I get acces to the expansion packs of the elder scrolls IV: Oblivion?
Assuming you've installed the entire game (every disc), here's how to start the Knights of the Nine and Shivering Isles quests:



Knights of the Nine:



Strike up a conversation with virtually any NPC outside of Anvil and inquire about rumors. You'll be told that Anvil is in an uproar after a brutal attack on their Chapel of Dibella and the arrival of a prophet ranting about the end of the world.



Being the investigative type, fast-travel to Anvil and chat with the guard standing outside the chapel to learn more about the situation. After warning you not to enter the chapel unless you have a strong stomach, the guard expresses his confusion on how someone made it into the chapel without being seen by the city patrols. He thinks that the town's new prophet might be on to something - that an unholy doom is visiting Cyrodiil. At this point, the first quest (Pilgrimage) is triggered and you're free to enter the chapel to get a better idea of what took place.



Shivering Isles:



Take a look at your journal's Active Quests. There should be one called "A Door in Niben Bay." That's the first of the Shivering Isles quests.



Niben Bay lies east of Bravil, so you'll either want to fast-travel to the Bay Roan Stables or Fort Grief to shorten the amount of time it's going to take you to investigate the doorway. Take a quick swim to the island in the center of the bay and you'll discover a creepy three-headed monument with a swirling blue portal in the mouth of the central face.



There are two NPCs standing outside of the portal - a guard named Gaius Prentus and a Khajiit woman named S'fara. The Khajiit has lost her mind (presumably by traveling through the door and back again), so she doesn't have much to say to you. The guard refuses to speak to you at the moment, since he's busy checking out noises that have been emanating from the doorway. As you approach the portal itself, another NPC named Belmyne Dreleth will return from the other side in a crazed state. In a psychotic rage, he attacks Gaius. You can help fend off the lunatic if you want, though the guard shouldn't have any problem dispatching him on his own.



Once Belmyne has been put down, Gaius approaches you and recommends that you don't go near the doorway as "nothing that's gone in has come out right." Obviously that's not an option if you want to get your money's worth out of the expansion, so cast aside the guard's warning and make your way up to the doorway. A voice calls out stating that you're unworthy (and then goes on to welcome you to the isles, as it's the "perfect time" for a visit). Put aside your fears and charge through the portal into The Fringe.



You'll appear in a small, dark room containing only a table, a clock, a book called The Madness of Pelagius, and a man named Haskill. Haskill is willing to speak with you, but he requires that you take a seat at the table first. Once seated, he introduces himself as Chamberlain to the Lord Sheogorath and explains that the door behind him leads to the realm of Sheogorath, or, to some, the "Prince of Madness" and "Lord of the Never-There." Sheogorath is currently looking for a mortal to act as his Champion, and Haskill offers you the chance to assume that role if you feel up to the task. Agree and Haskill will exit the room just as the walls transform into hundreds of butterflies. When the swarm of insects disappears, you'll be treated to a mushroom-laden landscape and a new quest called Through the Fringe of Madness.How do I get acces to the expansion packs of the elder scrolls IV: Oblivion?
Shivering Isle there should be a portal around lake BravilHow do I get acces to the expansion packs of the elder scrolls IV: Oblivion?
There should be two discs in the case, put the second one in first, then it should download the expansions onto your 360 or PS3 then put in the first disc and if you want to go to Shivering Isles there should be an island in the lake next to Bravil, and to get to the Knights of the Nine go to Anvil and look next to the chapel for a priest who is preaching to people passing by.
knights of the nine is east of anvil and shivering isles is in a 'strange door' east of bravil through the water.





you could look it up on google and pul up a map with the location



good luck