My friend just changed from XP to W7 and on installation of her old Pro Tools LE disc, it says it needs XP to install. I believe her disc came with the piece of Pro Tools hardware she has. There's a long number on the disc envelope, presumably the number she needs to verify authentication on installation. Will she be able to upgrade the software to work with W7 for free using that number, or do we have to assume it'll cost (a lot)? I'm guessing the latter.