http://www.turbotaxcustomerservice.com - You can install TurboTax software either through CD or online. Before installing clean up and defragment your hard drive. Run windows update up to date your system. Update your systems hardware driver’s. Update your systems firewall, antivirus, spyware protection. Before you start installation process goes all the other applications and browser windows. Do not install Turbotax in removable flash drive. Turn of your firewall and virus protection while installing Turbotax. If there are any antivirus and firewall programs in your computer which you don’t use any more uninstall them prior to installing Turbotax.