Mac & Windows NAS Drive help

I have two laptops - a new Macbook Pro and a Dell w/Xp Pro. I want to setup a network drive that will enable me to back-up both laptops as well as back-up the network drives themselves. Raid 1, I guess? I want to be able to store all of my music and pictures as well as other files I won't need on the go, on the NAS as well. I see a lot of threads with people using the D-Link 323. Will this do the job? It seems to be the way to go but I'm a little confused on how you set-up and format the drives for this set-up and what software to use for the laptop back-ups to the NAS. I've seen mention of SuperDuper, but doesn't that requires the NAS to be formatted for Mac? And what do you use to back-up the Windows pc?

Any suggestions would be greatly appreciated!!!

And bear with me, I know enough to be dangerous!!

there's no need to format the NAS for either OS. The sharing protocols used handle the transaction and the NAS itself performs the right.