Download excel file from sharepoint site using console application

HI
I am .net developer and dont know about sharepoint.
I am developing a console application (c#) which has to connect to remote sharepoint server and download excel files from there. Currently the sharepoint site is hosted in development machine. So I am able to connect. But when I connect to a remote server its not allowing to connect. So is there anyway to connect to remote sharepoint site and download files using the site username and password
Thanks & regards