Okay... It looks like nobody has been able to help you out. Here's the deal. You say that the administrator account was creating at install time with no password and that you are unable to attach to the computer via your home LAN. THe most likely scenario here is that you're logged into another computer with a different account. Regardless of whether you have no password set or not, you wil be prompted to enter a user name and password unless passthrough authentication is at work. So, if you log on to your computer as administrator <no password>, and go to access a share on the new isntallation, you will not be prompted.