I gotta ask, but are you sure you're putting in the DVD with the 3D content? I believe the 2D and 3D versions are included with that movie. I haven't seen the movie in 3D either, but usually there are only certain parts that are in 3D.
That being said.. you shouldn't need any special hardware. A computer monitor is essentially an over priced TV screen. Maybe the colors are off or something with refresh rates?
"Blu-ray is just a bag of hurt." - Steve Jobs