Problem in Exporting

[Start3d]

Hi Everyone

I am a new user in AC3D

I read about AC3D in a forum I like it

i used it to make a model when i export that model to other 3d programs to

render it it appear not smooth

thses are pictures to explain

this is a picture to my model in AC3D :




and i exported it to .OBJ to render it with other 3d programs like Blender3d

but the problem is my modeling does not appear smooth like in this picture :



and look what happend in Carrara too :



please help me to make my model smooth



i like this modeling program and want to make professional work on it