I'm trying to use True Image Home to back up from a Windows XP SP2 machine to a mapped network drive on a Vista 64 server. Even though the remote drive is mapped on the XP host (and fully accessible otherwise), True Image Home is incapable of writing to it. I've tried every combination imaginable in the "authentication settings" dialog and nothing makes a difference. Any suggestions on how to fix this? If everything else on the server can use the sharepoint without playing authentication games, why can't TIH?