I have a machine that has an old monitor on it that I need to purchase a replacement for. The existing monitor is a Mitsubishi AUM-1391A. This has a DB-9 connector into the TTL port on the monitor. From what little info I can find it is 16 bit TTL. I would like to replace this monitor with a standard VGA or DVI monitor. I can't replace the video card in the machine. I did find PDF for an RGB/VGA converter box, but I can't find anywhere to actually buy one. I did find a monitor that might replace the existing, but that will keep me dependent on TTL monitors. Any suggestions?