Unlocker howto?! doesn't do anything

you should get it off the creator's page instead.

http://www.emptyloop.com/unlocker/#download

1.9.2, for both 32 and 64 bit windows. you'll want to click the "Download Unlocker 1.9.2 - 32 and 64 bit version" link.

be sure to use advanced during installation and disable the delta toolbar that's bundled with it. you don't want that.

Do you have 64-bit version of Windows 7 ? Unlocker doesn't work on 64-bit OS, get LockHunter

Actually there is a 64 bit version of Unlocker, look for a file such as: Unlocker1.9.1-x64.exe This program works great in Windows 7 64-bit, but not all download sites have the 64 bit version of Unlocker available. Have Fun being in control of your computer!

As Matteius said, searched "Unlocker1.9.1-x64.exe" and found this (after a few redundant results):

http://files.brothersoft.com/internet/miscellaneous/Unlocker1.9.1-x64.exe

This works for me on Win7 64bit.