Philomorph

I'll admit I'm a n00b. I'm running a Tekkit 3.1.1 server on MC 1.2.5 with various mods enabled/disabled. I looked through the forums here and didn't find instructions, but I probably just missed them. So if someone can point me in the right direction, it would be appreciated. How exactly do I upgrade my world to the new Tekkit release? Can I just stop the server and copy all the files (minus the configs?) over top of the existing ones? Or is there more to it?