Its on the downloads page for the mod just below version 2.1.
Just scroll down the page a bit and look for:

Local Sales Tax Mod Version 2.0a
Added support for Tax Classes. Each tax rate must now be
associated with a specific tax class allowing for correct
tax calculations with non-taxable items.

**Updated code and fixed calculation bug.
Also added debugging option to module install to help find duplicate sales tax rates.
Author: LadyHLG
Version: 2.0a
Zen Cart™ Version: v1.3.7
Update added on Dec 18 2007
Download Now! <---- This is the link!!
File size: 21240 bytes


LadyHLG