I've got a chart of accounts on excel file and I want to import all of it in OpenERP? How and where can I do this?
Probably you should read this: https://accounts.openerp.com/forum/Help-1/question/105/
Note that there have been many questions about this in the recent past.
import chart into the search box above and skim through the listed questions. You will find the answer you require or enough description of the experience of others to be able to reframe your question into something more specific.