Check out
www.foldershare.comIt's freaking awesome. It used to cost money, but Microsoft bought them recently and made it free. Anyway, you just specify what folders you want to be synced and it does it automatically. It always runs, but it's tiny I haven't noticed any slowdown, even on my three-year-old laptop, that was comparatively slow when I got it cos I bought for portability not speed.
But, yeah. The program is really great. My problem was that when I'm home, I do all my homework on my desktop, but at school, I do it all on my laptop. I'm always transferring files over the network from one to the other, but it was getting to where the Law School folder on one was looking fairly different from the Law School folder on the other, and I couldn't remember which computer had the most recent version of a file, etc. So I set up this foldershare thing, and now the folders are always identical. I tested the sync by creating a new text file in the folder and it showed up on the other computer within about 10 seconds or so. It works in both directions, so regardless of which computer I'm working on, the changes will be reflected on the other one.
As if all that weren't enough, as an added benefit, I can now go to the foldershare.com website and access the entire contents of my hard drives from anywhere that I have internet access.
Oh yeah . . . you can also share a folder and then give invite anybody else to access it through the foldershare.com website.
Did I mention it's free?