i'm planning on doing the same thing with the box set (i want to upgrade to ilife 09 and iwork 09). i'm wondering if i should just do a clean install on the disc or will a simple upgrade will do. i haven't found much in terms of this upgrade besides "will it work with the upgrade disc?", which isn't what i'm asking.
i'll probably wait until the .1 upgrade though, because i want to go through a clean and thorough check of my computer of what i do and don't want before upgrading (and looking at apps that won't survive the upgrade) and i may want to test it on a jump drive first.
btw, how much space will i need for sl on a jump drive?