The 2005 TurboTax Deluxe Federal + State Turbo Tax Software CD is a tax preparation software that is compatible with Windows XP and Mac operating systems. It is designed for individuals looking to file their federal and state taxes with ease. The software includes all the necessary features to guide users through the tax preparation process, including support for English language users. With a minimum of 512 MB of RAM and 500 MB of hard drive space, this TurboTax Deluxe Federal edition is a reliable option for those seeking to simplify their tax filing experience.