Hi Xuan,
This forum is for Office Live Workspace, which is a companion to Microsoft Office for document collaboration. If you're looking for help with Office Live in general, you will want to visit the OLSB forums for help at http://myofficelivecommunity.com/Default.aspx
Try asking your question in the forums there, I know there are a lot of very experienced users who are always ready and willing to help out with advice.
For help setting up your Outlook, outside of Office Live help, you'll want to visit http://support.microsoft.com for assistance.
Good luck!