I'm pretty sure that you should still be able to unload loot with any of the fences you've used throughout the questline. You can also use Manheim Maulhand at the Inn of Ill Omen, or hire a fence at Dunbarrow Cove if you have the Thieves Den plugin.

Fathis Ules might be glitched if you completed the Sins of the Father quest, making him unavailable for fencing.

Ah ok, thank you. I was looking for him in particular, I guess I'll go find someone else

Also, if he's not glitched, he might be hanging out in Dareloth's house in the IC waterfront with some more of your Thieves Guild pals.

There's a small mod (that made it to the Hall of Fame) to add a non-guild fence to the game, called Thievery in the Imperial City.
http://planetelderscrolls.gamespy.com/View.php?view=OblivionMods.Detail&id=1368

It appears to be a good mod as little of it that I have seen so far. Besides buying hot items, he also sells tips on stuff to steal.

That sounds awesome, but I bought the game through Steam, I'm not sure if I can add mods to it, as now it runs through the steam client

Shouldn′t you be able to "clean" your stuff yourself and sell it as usual :biggrin:

Steam will give you no trouble with mods whatsoever. OBSE can be a bit tricky to set up, but just read the readme and you'll be fine.

All I can say from here is do your homework, get your tools, and go nuts. :mohawk: