Vomiuts: But I always get the same error messages. I gave up and just uninstalled it.

So I just wasted $4, not the end of the world. But I could have gotten a game on GOG that does work with that same $4.

StingingVelvet: Works for me on Win7 64 without any tweaking at all. Welcome to PC gaming.

Nirth: That's weird. No admin rights and no config bypass? Do you have SP1?

Nirth: I bought it myself and here's what I did to make it work:

According this link: How to resolve "Application Error: Problem checking Steam application" on Windows 7 you need admin rights for Win7 64-bit so I added that to Steam (and the game exe as well). You need to restart for this to take effect if someone isn't aware.

Then I followed this: Jade Empire Wiki

Add Vista 2 Compatibility mode for the config.exe. If it still doesn't work you need to create a file that bypases the configuration that's called "SystemInformation.xml" as a blank text file. After that it should work.

Tips: In the last link I provided it involves a few graphical tweaks along with FPS unlock, very useful. In Windows 7 the game should automatically detect your desktop resolution but after you have started it once you can change it by following it on the site.