Tax Rates

[loghova]

I am attempting to set up osCommerce to only charge sales tax to in state residents. I do not wish to have it charge sales tax to customers out of state. Is this poosible and how is it done?

[loghova]

After searching the forum for possible solutions my Tax Rates table is screwed.

 

This is the error I recieve after clicking 'Tax Rates' in the Admin Panel.

 

Tax Rates  

Priority Tax Class Zone Tax Rate Action  
1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '-20, 20' at line 1

select r.tax_rates_id, z.geo_zone_id, z.geo_zone_name, tc.tax_class_title, tc.tax_class_id, r.tax_priority, r.tax_rate, r.tax_description, r.date_added, r.last_modified from tax_class tc, tax_rates r left join geo_zones z on r.tax_zone_id = z.geo_zone_id where r.tax_class_id = tc.tax_class_id limit -20, 20

 

Any assistance would be appreciated.