Quote: "I am trying to make a bullet that has physics in a game so I can shoot boxes and things"
I have that running perfectly in my project right now. It's actually very simple. Infront of every gun my engine loads, it has a limb attached to it where I can position the bulllets. To figure out what rotation the bullet will have(witch way the bullet will shoot), I just rotate it with the angles of the same limb. Now that my bullet is positioned and rotated, all I need to do is to push the bullet with a one-time force using the command
phy add rigid body local force. I'm also giving the bullet a mass. Not that it has to be that big though
hehe.
If you would like to see how it looks in my project you're welcome to download this small video so you just get the basic idea:
http://www.nerd.galekus.com/CiCon_EngineMov5.wmv
I hope that helped you a bit
But if you have any more questions about then just ask!