I gave the MS Vista's backup utility a try and really never got started....
First, while sitting in my easy chair using my laptop I fired up "Backup and Restore Center" and I received this error.
You cannot create a backup or change backup settings when your computer is running on battery power. Attach a power cord and try again. (0x8100000B) (source)
Really? That's lame, but I wonder if they are trying to protect against me starting a large backup and then having the computer loose power in the middle.
I plugged into wall power and then...
As confirmed by Microsoft on their technet blog, you cannot use Vista backup to backup your Vista machine to an XP Home machine. The explanation I'm sure if very valid...but in the words of the Saturday Night Live News Desk, "Come On!"
The network share could not be accessed for the following reasons:
You need Full Control Permissions for the network share. Make the user a co-owner of the share, with Full Control. The network share cannot be on a computer running Windows XP Home. (0x8100002A)
Please ensure that the network location is valid.
It's as if MS is trying to stop us from backing up files!
The good news is that the errors are very clear so I wasn't guessing at some weird error code.