Yes you can
 The first model I put on line was built Entierly in In cool 3d production studio (See Apple_UK free stuff elizabethan house). I exported the house as a 3ds model then imported it into poser

All my models are built in the same programme. However, I see other models eg from Touchwood who built a lancaster bomber that was better than the one I built in Cool 3D PS. Really, you get what you pay for. Cool 3D PS = 120 GBP 3D max = 800 GBP