U can also check this addon!
http://www.wowace.com/addons/acp/files/245-3-3-5/
For those who doesnt know what it does, it allows u to activate or deactivate addons just by pressing ESC during game and selecting addons button.. So simple and its also working on this wow version!
Working Questhelper link for WOTLK 3.3.5 and Onebank3 link for 3.3.5
these are the links you can add and are verified to work on lordaeron server
Questhelper (proper version for 3.3.5 patch is questhelper 1.3.11):
http://wow.curseforge.com/addons/que...s/8358-1-3-11/
Onebank3 (similar to onebag3, but for bank obviously):
http://www.wowace.com/addons/onebank3/files/74-v3-3-5/