DON'T DO IT!!!!!!
EDIT: Seriously, don't do it. It seems like a good idea at first, but soon you'll realize that the colors are too screwed up for you to get any work or gaming done, and you'll uninstall it.
If you're running Vista, at least, a few days later you'll boot up to find your screen way too dark and/or blue. That happened to me, and I couldn't figure out how to undo it for about a year. The only workaround I could find at the time was to reinstall the stupid program and let it run with neutral settings.
This program literally screws with your current color profile, and the only real way to get rid of it is to change color profiles.
I don't have firsthand experience with any other OS, but there are reports of flickering, stuttering, extreme lag, and the colors abruptly changing problems that seem to plague about 30% of all users.
If you play games or do any work that requires colors for more than an hour at a time, you do NOT want this thing.
EDIT2: Also, customer service technical support is practically nonexistent. The only way to contact anybody is to post in the comments section and hope somebody non-retarded replies. My name in the comments is "Earmite" if you have an urge to delve into them at all.