[ubuntu] Installing without installing GRUB? (or whatever bootloader it uses)

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http://ubuntuforums.org – I don't want to go into details, but I have a somewhat complicated boot configuration due to the way my system is setup. I would prefer to not go through the trouble of figuring out how to redo it in GRUB. Ideally I'd like to install Ubuntu without it laying a finger on Win7's bootloader, then go and add it in later. I know it's possible to use Windows' bootloader with Ubuntu, but is the other part possible too? I'm a major nub when it comes to *nix, so please try to explain things in terms that a Windows power user can understand. Thanks! (Hardware)