United Online, Inc. launched its new DSL service available to customers in 21 states, the company announced Thursday. The Woodland Hills-based Internet service provider offers two levels of service through Verizon. While the company believes that dial up continues to be a great solution for many people, it wanted to offer the faster connection of DSL to those customers who want it, said United Online Chairman and Chief Executive Officer Mark R. Goldston. “Our new relationship with Verizon made this the right time for NetZero to enter the broadband market with a competitive offering that enables those consumers looking to download photos, video, music and large files at speeds up to 50 times faster than dial-up,” Goldston said. NetZero DSL features easy do-it-yourself installation, virus protection, a pop-up blocker, email with spam protection, a DSL modem and free backup dial-up access account.