Although I get a sense this may not be quite what you have in mind.
Unfortunately, Vista doesn't have the capability to live sync folders
between PCs on a network. But here's a free service you might want to look
into. A caveat: I haven't tried it on my own home network, but have heard
good things. https://www.foldershare.com/
Hope this helps. Please let me know how it works out.
Michael Stroh
User Assistance Writer
Microsoft Corp.