Yes this a copypaste from the guide I posted on another site.
[Image: http://i49.tinypic.com/evdsop.jpg]
What You'll Need:
* A Pair of Red/Cyan 3d Glasses (Available here: 3D Plastic glasses 3-d glasses 3d-glasses 3d illusions at 3d Glasses Online). I'm using some I got with the Coraline DVD
* A nVidia GeForce graphics Card that's 3D Ready (So pretty much any nVidia GeForce card made in the last 4 years)
* 1 Gb Ram (2 recomended)
How to Do it:
1. Install the nVidia control panel (NVIDIA DRIVERS 6.06).
2. Right click your desktop and select nVidia Control Panel
3. On the left, click "Update your system drivers" under system update and click "Check Now." Make sure "Include Beta updates" is UNCHECKED
4. After installing the updates provided (and probably restarting your computer) open the nVidia Control Panel again. This time on the left, there should be a tab called 3D Vision. Click "Set up stereoscopic 3D" and check "Enable Stereoscopic 3D"
5. Put on your 3D Glasses and go through the setup. This will help determine what kind of glasses you have and what settings need to be made.
6. After running the installation, you're now ready to play Mabinogi in 3D.
To Disable 3D, simply open nVidia control panel, click on "Set up stereoscopic 3D" and uncheck Enable stereoscopic 3d.
Hint: When mabinogi opens now, it will say in the bottom right that this game has not been tested by nVidia. Simply hit CTRL+ALT+INSERT to get rid of this box.
Note that this isn't just for mabinogi, this affects any other game you want to play that uses DirectX 8.0 or later. A few of them are World of Warcraft, the Sims, Combat arms and should even work for Vindictus (not confirmed). Also, screenshots and still images will produce a ghost image behind quiet a lot of objects, so this isn't good for taking screenshots in.
If you have any questions or just want to say that you're using this, please post below. I think it's a great thing that anyone with 3d ready graphics cards should know about.
I'll be uploading videos/screenshots of Mabinogi Heroes gameplay in 3d :3