Ehhh, don't want to destroy your work.... but you're now allowed to use the original Poser and DAZ models in game engine. You really may want to check out the user agreements, before you find yourself in trouble with EF or DAZ.
Both are know that have taken people to court who use their 3D model for anything else then sprites, 2D renders, avi's or flash or printed media.
You can use the 2D output for about anything you like, but not the actual models. You can export them to a different 3D application like 3DSMAX, as long as they stay in there and the output you use is only 2D.