and do you need any quests completed to do it...(this is for the 360 btw)

The first time I tried on my 360 version, it didn't work. From what I understand (and thusly what I have figured out), you need to break into Dorian's house at night and make sure he yells at you to leave. Make sure you kill him in one shot though, so you don't have the guards on your boat.

I have never heard of the Dorian glitch. Can someone explain it to me?

Quote, courtesy of Cheatcc,

"Go to the Talos Plaza District of Imperial City and find a house owned by a man named Dorian (Dorian's House) in the southeast section of the district. Break into his house and find him. When he tells you to leave, kill him. Do not press X to loot him and take all. Instead, take each item individually, finishing with the gold, which will not run out once it hits 8 pieces. Just keep selecting the gold he is carrying and keep pressing A as usual. Do this repeatedly, and the number of gold pieces remaining will freeze when it gets down to 8 gold pieces. It will not go any lower, but will just keep giving you as much gold as desired. Note: After you break in and he tells you to get out, talk to him. Go to "Persuade" and bribe him a lot. After that, kill him. He will now have more money to loot, which makes it easier to get more faster."

Thanks for that piece of information Kiln, now I have to go and use this to my advantage hehe

make sure to milk him for all he's worth the first time around. his corpse will eventually disappear... i made this mistake and no more free money to pay my bills ;;