Hi,
There are a couple of ways to do this that I know of, one is to place this code in the INT field of the object.
This setvectorup [0,0,1];
Or you can do it via a script. General Barron over at BIS wrote a script that allows you to set the pitch and bank of objects.
http://www.flashpoint1985.com/cgi-bin/ikonboard311/ikonboard.cgi?act=ST;f=71;t=73312The first options works pretty well, the second allows you to fine tune the objects if need be.
You might want to take a look at the RTE if you are placing lots of objects, The Real Time Editor can save you hours of work when it comes to placing objects and units, although you still have to level objects manually by inserting the setvectorup command in the INT of the object, well at least I think you do, I've not yet seen an option to level objects in the RTE, but I may have missed it. Never the less, still worth its weight in gold. The RTE can be found here at OFPEC
Turk.