Are there any tutorials that focus on replacing vanilla meshes?

[robertward203]

sooo... ever since i finished skinning, i've been plagued with problems when trying to replace vanilla items. Mainly because the stuff i was making hasn't got a similar, vanilla model. Most of the time when i try to copy it says something about the versions differing or there being too much data to copy. Then by some miracle i actually got something in-game, it made my body dissapear and caused serious 1st person clipping. Are there any tutorials for making new meshes without a vanilla counterpart or am i just doing it wrong?

 

I was using this tutorial:

http://www.globalgameport.com/archive/index.php/t-32073.html

 

Thanks