OK I finally managed to install it. Step 16 is key. The steps follow below. The screen shots can also be found on
http://www.alturl.com/z6ikk
1. Place Linux Mint DVD in drive, look for, and launch Mint4Win
2. Click "Install Inside Windows" when popup appears
3. Specify where in the Windows file system to create the Mint partition, its size and a username and password
4. Installation of the "demo" Linux Mint occurs. It's the one that will reside on that Windows file system partition for this phase
5. Select Reboot Now when the "demo" Linux Mint is done installing
6. The Windows Boot Manager should have an option for Linux Mint. Select it
7. The desktop of the "demo" Linux Mint appears. This demo version doesn't "remember" anything if you restart the computer
8. From the Linux Mint menu, select Software Manager
9. In the top right hand corner search box, type ubiquity-slideshow-mint and make sure it appears in the search result. Double-click it
10. Click on the Remove button for ubiquity-slideshow-mint
11. When it is done, you should see "Not installed" for ubiquity-slideshow-mint
12. Back on the Linux Mint desktop, look for and double-click the icon "Install Linux Mint"
13. In the Welcome screen select desired language, I chose English
14. Make sure there is enough disk space and has a stable power sourcee. I left my network connectivity intentionally unplugged
15. If a Wireless connection screen occurs, select "I don't want to connect"
16. VERY IMPORTANT: In the upper pane, select the loop2 that has "/" and "ext4" in that line. In the lower pane select the loop2 that has "root.disk" on that line
17. Pick a time zone and select a city--when you type part of a city's name it autocompletes
18. Select keyboard language
19. Specify computer name, primary user name, password and whether to automatically log in or requires password to log in
20. Select which Windows user accounts you want to import stuff from; I selected nothing fearing it would slow things down
21. A tiny Install / Copying Files dialog with progress bar appears
22. Progress bar takes quite a while to progress, something like over 4 hours on mine
23. When the computer finally reboots on its own, select Linux Mint from the Windows Boot Manager as before, and now there is an additional GRUB menu that comes afterwards to select Linux Mint from too
24. Linux Mint appears; I changed the desktop and installed Chrome shortly after