Access files on my computer through the WD TV BOX

Need help access my files on my computer through my W D TV Box

Download the User Manual Here: http://support.wdc.com/product.aspx?ID=1015&lang=en

Network Sharing :http://support.wdc.com/KnowledgeBase/answer.aspx?ID=3787

Iknow how to get there it is asking for a login but Idont know what user name and password it is asking for and the password is lock