Looking for away to create interactive bank, and buy sell multipull items

Ive been looking around for away to do this for multiple days cant seem to find a tutorial on how to do this..
Have iconomy, essentials, craftbukkit.. are the ones i think would have anything to do with
this, that i have installed.
Will get anything else needed.
Ive seen on other servers with what im trying to do, like the Bank sign for balance deposit withdraw ect.
Ty for Help.