A completly rebuilt cart: Powerful, feature-rich shopping cart software. Main features include: Unlimited products/ categories; Unlimited modifiers (properties) per product; "Related Items" and "Impulse Buy" products; Related products; Coupons; Dynamic Back-Orders and Pre-Orders; Batch Modifier assignments; Unlimited pricing structures by modifier; Unlimited images per product; Automated thumbnail views; Automated Inventory Control; Automated emails; QuickBooks integration; Barcode and Serial Number Support; Free Shipping option; Dynamic estimated shipping times; Pre-fill Checkout procedures; Automatic sales tax calculations, based on your State (if applicable); Real-time shipping calculations; Automatic weight detection; Real-time e-commerce API's pre-integrated; Real-time Fraud Patrol API's pre-integrated; Profiling and Neural Network technology; Authorize.net, Verisign Payflow, and Paypal functions pre-integrated; Dynamic Sale items; Encryption and decryption support; and Browser based file uploading for ease of management for site owners. Complete E-commerce Package!