Yeah, you can install it in any partition [I installed it on the secondary one]. The thing is that when you are on XP, XP disk is labeled C: and Vista drive is labeled D:; when you are on Vista, Vista disk is labeled C:, and XP drive is labeled D:, i dunno, it's kinda weird...

You know, i have a barnoaflas copy of XP and a barnoaflas copy of Vista, but it don't killed my XP key, both are working fine... about 2 weeks working like this. Of course, automatic updates are deactivated on both OS's.

And you only have to select which OS you want to boot with at the startup...

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