Hi Jesse -
There are two things you'll need to do. First, you'll need to program the two different tax rates. Refer to the section titled "Tax Rate Programming" in the manual. For example, program tax number 1 to be 8% and tax number 2 to be 4%. Second, you'll need to program one dept key to be taxed by tax number 1 and a second by tax number 2. Refer to the section titled "Department Status" in the manual. By specifying the "Choice of taxable status", you can set a department key to be taxable 1 (taxed by tax number 1) or taxable 2 (taxed by tax number 2). Then it's just a matter of ringing up the items under the correct dept key.
Hope this helps ...
Steve, June 2010