BioWare export scripts for 3dsmax
From NWNWiki
These scripts can be used with Discreet's 3DSMax 3.0 / 3.1 / 4.2 / 5.0 to convert models created in 3DSMax into a format that the BioWare Aurora engine can read. The package includes documentation ('NeverwinterScripts.doc') to help you use these scripts, and hopefully to describe some of the nuances we used in the process.
[edit] Where to get it
More information and download can be found here.
