Attached Link: http://www.blender.org/modules/documentation/htmlI/

ash those can be done in blender, path extrutions and the like ,have a look there. you can always export your object back to bryce an example of how to make an tire is here: http://members.yourlink.net/gruff/wheel/ general modeling info can be found here: http://www.blender.org/modules/documentation/htmlI/ picture is still from a test animation i did 200 frames in 10 min lol

for some free stuff i made
and for almost daily fotos