Yeah, even if you were to somehow get it installed you probably wouldn't be able to run it correctly and without issues. It would be best either to back off of Windows 8 or buy a new version of Quicken.
I agree with everyone above. It's time to upgrade. You're trying to use a 9 year old piece of software in a brand new operating system... I think you've gotten your money's worth out of it. I had a quick look at the Quicken website and new versions aren't too unreasonably priced.