I just got my laptop (A Vostro 1000) from Dell. It's going to act mostly as a 2nd system in case my PC breaks or we have a power-cut or our internet goes down. So it needs to always be up to date because in such situations I might not be able to access my main PC to get the files.

Both PCs will have WinXP (the laptop has pro and the desktop has home edition) and Office Professional 2007. What is a simple way I can set things up so if both are on the network, certain folders ONLY get synchronized? I have MS Groove which mentions some sort of Synchronisation but I've no idea if it's useful. I also have a whole bunch of MS software from being a partner, so if they make a good tool I probably have it. Changes will mostly be from desktop -> laptop if this makes any difference?