Thanks. I did that the first time and it wouldn't boot to anything. But I'll try it again. Maybe I screwed something up.See, what you're supposed to do is install Linux Mint with all the defaults. After the setup completes, you'll find that GRUB has taken over your bootloader and presents you with a list of OSes to boot into.
At that point, we use EasyBCD to put the Windows bootloader back in control and add an entry pointing to the Linux partition to the Windows boot manager. It's very safe - esp. since you already have an image of the Windows 7 installation to fall back to, just in case.
Hmmm, sounds like something went wrong there. This wouldn't be the first time, I have like 4 different bug reports open on the Ubuntu bug tracker about it not installing to partitions correctly.
I would advise re-installing, let it put its files wherever it wants. Then use GRUB to get into Windows. At that point, add a Linux entry w/ GRUB2, go to Bootloader Setup and choose "reinstall vista bootloader" to give the windows boot manager control of the boot again.
Wiped and reinstalled Mint and accepted all defaults. Rebooted, saw no boot options and found myself at grub rescue. I restored the Win7 installation and retired to the home theater to watch a movie. I'll deal with this tomorrow, bit I might just throw another computer together to play with Mint.