This question has a few bits to it, so I'll try and lay down what I want, what I have and hopefully you can provide the what will make it work.
I have several laptops, and would like the all to synch with a consumer nas when switched on, or when they connect to the network after being worked on awway from it.
I use Visual studio as my primary application, I mention this because it is constantly making small changes to files.
I run Windows 7 ultimate on all machines.
Things I have installed: Dropbox, Live mesh (+skydrive) Office 2010 and sharepoint designer.
I'm a tad baffled. Dropbox would have been perfect but there are issues in Visual Studio and/or dropbox where files are constantly changed a little.
I've asked something similar over on SO, but it occured to me this might be a better place, so first post here :D