[6S.Maraz]

Best tool in my very humble opinion is Dr Jones' Msh Converter.

(The link is inoperative)

Use it to read whole hier.him file and save to 3ds format.

Then you need Deep Exploration 5 (free trial 30 days) to convert to Max format.
http://www.righthemisphere.com/products/dexp/

Then you can manipulate your model in MAX.

After you have to import back to IL-2, here you have at least three options:
- Dr. Jones's Msh Converter itself
- Fatduck's exporter: (The link is inoperative)
- Maraz export Plugin: viewforum.php?f=31

I advice you to chose one of the latter (Fatduck or Maraz) that are simpler than Dr.Jones'.

Bye
Maraz