Technical support is FREE for current D4COST users. A $45.00 charge per incident applies to D4COST Versions 9.0 & 9.5. All other versions of D4COST support charges will be determined at time of request. Design4/COST versions 5.2 and lower are no longer supported. Please call our technical support line 813-662-6801 or email at info@d4cost.com Monday through Friday 8:00 AM EST to 8:00 PM EST.