TDSPCS1 This download installs OpenChoice Desktop Application V1.8 and TekVISA v3.3.3. (117MB) Prior to installing this SW: If a previous version of OpenChoice Desktop is already installed, use the Start->Control Panel->Add or Remove Programs wizard to remove it. For Vista this wizard is called Programs and Features. Following removal of the older version proceed to the installation steps below. Installation Instructions: 1. Save the download executable file to your hard drive. Make note of where you save it. 2. Double click the downloaded executable file to extract the files and begin the installation process. Follow the onscreen messages. 3. You may delete the downloaded executable when the installation is complete. Note: If for some reason you are unable to download this software, or if you have successfully downloaded this software but are unable to load it into your Tektronix Windows-based oscilloscope per the instructions above, please contact the Tektronix Technical Support Center. Customers calling within the U.S. call 1-800-833-9200 (customers calling from outside the U.S. call 503-627-2400 or go to: http://www.tek.com/Measurement/programs/tech_support/ to send an e-mail).