Hi,
Thanks again for all your help.
The person at Windows live tech support said, and rather simply, to just specify the path of the address book to be opened or accessed. Here's the full explanation from tech support; maybe you can pick up something I'm missing:
"... an address book is associated with a specific email address (Windows Live email address or not). If you sync a file that goes with only a specific email address, I am uncertain if it will sync. So what you can do is create a back up copy of this address book file first and do the same on the other accounts if you will sync a different address book under a different email address. Creating a copy will create a duplicate address book, which you can move to a different path in your machine and sync that copy instead of using the original one. Add each of your recipient machines to this newly created syncing folder for them to have a copy of this address book. Add the address book from other accounts on the same folder for them to sync on the source machine and vice versa.
After syncing the files, you are now ready to check if you will be able to access them. This is where your email provider could help you open the address book files. In your email application, simply specify that the path of the address book to be opened or accessed. It should be the same as the one where this syncing folder you created is located because the files there are updated."
I'm not sure if the sync is an actual sync or a db exchange. But, I am able to test the sync with regular files. I uses normal jpeg photos, and when I add/delete photos from one computer, the photos are added/deleted from the second computer. So, the syncing appears to work, but I haven't been able to make the address book syncing work.
There might be other syncing solutions out there. I remember seeing a few when I first did a search for syncing. I thought the Windows sync would be a solid choice. I have considered MobileMe, and that would probably work perfect, but I work for a company, and my boss is trying to avoid the extra cost for the yearly subscription.
Anyway, thank you again for all you help. If you have an more suggestions or tips, it would be much appreciated.
Salvatore