[Zope] dumb questions?

hi! i'm currently running 2.5.0b3, and looking to upgrade to 2.5.0 (stable) -- is there an upgrade patch? or do i need to get the 2.5.0 (stable) source, unzip into my existing dir, and compile? i'm on Windows, unfortunately. :) i'm assuming that if i use the latest binary distro (5+Mb), it'll mess up what i've already got, right? jake