Sync folder over network

[iviv]

So, I'm looking for a way to sync two folders over my LAN network. I use my laptop during the week, and PC at the weekend, so every friday I copy from my laptop to PC, overwriting the old files there, and do the reverse on mondays. Its not a huge hassle, but if there is a way to do it automatically (And bonus points for not transfering files which are unchanged between the two folders), that would be better. I've had a look at dropbox's website, but on the FAQ page it implies that it uploads everything to its own servers before copying them? That's not much use to me given the size of some of these files, it would be far quicker just to do it as I normally do, copying over the lan.

But are there any programs that would do this purely over the lan, no internet access required?

 

[iviv]

Thanks for the replies. I've tried synctoy, and its great, apart from the fact I have to run the sync manually. Still, its better than copying everything, since I'm at least only copying the changed files now.

Even so, would any of these programs be able to sync 'on the fly' as in, see its changed and automatically sync them?

 

[iviv]

I've got a task scheduled for 4pm every friday, and 9am every monday, I can't get it to do something on a file change, can I?

 

[iviv]

I think that is beyond the capability of both SyncToy and Robocopy. I don't think even the Task Schedular has such an option.

You could just set it to sync every 10 minutes or something.

Ah well, thanks for the replies. As it stands, its easier than it was originally at any rate.

 

[iviv]

Yeah, the frustrating thing is that dropbox does exactly what I want... but it has to upload all the files to the net, and my files are too large! Well, they're tens of Mb, but I'm on cable with an awful upstream, it would take a few hours to do each time I changed the file.