Will probably be choosing Erase & Install when I upgrade to Leopard, as Upgrade seems to be problematic, and I don't have a lot of HD space for Archive. I've already backed up all of my docs/music/movies onto DVD, but am wondering about software. The only expensive software I own is Office for Mac 2004. I'm wondering if it's possible to burn Office to a DVD like I did with all my other stuff. I would then stick it back on my computer after installing Leopard. Is this legal? Will it work with Microsoft's activation keys and such?