You use VA-ONCE to submit VA Form 22-1999 - Enrollment Certification, VA Form 22-1999b - Notice of Change in Student Status, and VA Form 22-6553c - Monthly Certification of Flight Training. It is an Internet-based application designed to work on any computer that has a web browser (Internet Explorer 5.5 or higher or Netscape 6.02 or higher). Any operating system will work. The recommended screen resolution is 800x600. You may check this by right-clicking on your desktop, and selecting Properties from the menu. When the dialog window displays, select Settings.