Where is an master mercantile trainer in Elder Scrolls IV Oblivion for the PS3

i believe it's the woman at the counter in "divine elegance" in the imperial city. i don't know who tells you about her, but you have to have...oh, hold on: http://www.gamefaqs.com/console/xbox360/file/941875/42463 near the bottom, it has all the master trainers and what you have to do to get training from them