I have used Truespace 5 and Silo, I had the same problem with both. I love Silo, but after being able to create with ease with this program. A Porblem that has happened with both programs is. 

Example, With Silo. I made a tables and drawers. What Looks great in the Silo window, when imported into Poser, The nice square lines from Beveling within Silo, come out with slightly rounded corners where they are square in the Silo Window. I had the same thing happen with TrueSpace also.  The model was exported in 3Ds.

If someone could give me a clue. I am using a Silo Demo, and hopping I can fine the answer. I can do some amazing stuff faster in Silo than any program I have use. A complete WW2 tank and an Airplane that I want to use in a movie I am animating. And I'm have little experience in 3D modeling. I guess my queston anwers that.

What version of poser are you using? I think 6 and later you can set the smoothing angle for objects in it I am not sure. Poser smooths everything it sees.

One way to get sharper edges in Poser is to sub-divide your bevels. In the frist picture above, I've beveled a cube; in the second picture, I subdivided each bevel face into two smaller faces (the highlighted lines) without changing their angle. The extra edge causes the spline-based smoothing algorithm in Poser to flatten the curve at the corner, resulting in a sharper edge, at the expense of a few more polys.

Also, make sure you have "smooth polygons" unchecked for your object. That feature applies additional curvature to the edges of the object, significantly rounding edges. Good for organic shapes, not-so-good for furniture and such.

Dann-O: I imported it into Poser 6. I now have Poser 7 but hadn't tried importing into That.
"When I first saw your name, I thought you were an old friend I use to work with from Toledo, Ohio." 
Thanks for that Information.

Captain Jack 1:  That is something I hadn't learned to do, and very well could be my problem. I hope it is. I don't have a book in Silo, but I can call out the help files. If I can get this conqured I can start doing things I would not have attemped. I won't get into figures. unless maybe down the road a cartoon charactures. (A lot more LeaWay) 

There is one other problem I am not completely sure which way to do it for the best results.
Example you want to make a Few holes in a wall as an example. I have been Boolean threw walls. but I get wierd results at times. Sometimes they all show up correctly, sometimes I get left over geometere in the wall and inside the wall. The inside the wall artifacts were the result of a square going  all the way through 2 wall of an airplane.

I always make sure I have enough of the object that will bore throught the main final object so it will have a whole all the way through it. I do this because the same shape of the boring object is the same size  and shape object that will be either the door or window. I then model that object as I scale the thickness to be correct.

Because I sometimes get mixed results, does it matter if I group a number of objects that will do the boring. then so they all can go through at the same time to Boolean that object.
When I do that that away. Sometimes not all of them do the Boolean correctly.

The former mentioned and the Boolean problems are the imeadate problems that I have had. If i can conquer these two items. I can do a lot I want to do. I know there is a lot to learn more than that, but modeling will now be a vialble option. Thanks !

Captain Jack's idea is what i use now, but just in case you wanted ANOTHER Method (a method I USED TO USE), is to use UV Mapper to SPLIT the Model.
When U use the split option, the edges dont have to be beveled. Its just another method to use for Poser Models.
Not a better method, but ANOTHER method.

U can see what I am talkin about here:
http://www.uvmapper.com/tutorials/tutorial_edge.html

It shows how to split the model so it looks like hard edges.

Just a thought. Hope it helps somehow.
Cornelp...

Thanks, cornelp. All the Ideas are always welcome**.**

BTW no I was born and raised in Pennsylvania not far away but not Toledo. Lived in Seattle for quite some time and now I live in China. Closest I got to Toledo is Sandusky ....Cedar Point.

Very Interesting Dann-0, I Use to go to Ceader Point quite often many a year ago when it was small time. Landed next to it in a Helocopter. What took you to China. My guess Buisness. That must be a great experince over there.