To upload your files to your website you need to obtain and install an FTP program onto your computer. We suggest using an open source freeware program like filezilla.
Download instructions are available here http://wiki.filezilla-project.org/Client_Installation#Downloading_FileZilla
Instructions on how to connect and upload and download files via ftp can be found here http://wiki.filezilla-project.org/FileZilla_Client_Tutorial_%28en%29
Once you have downloaded and installed the filezilla FTP client you need to connect and login to your website using the ftp address and login details provided in your Web Hosting Welcome Email.