I have recently purchased a new computer desk which locates the CPU some distance from the monitor (a 15" Optiquest). The cable from the monitor was not long enough, so I purchased a 6' long extension cable. Now my monitor shows "ghost" characters, especially in black on white screen displays.
Is there anything I can do to reduce or eliminate the problem? The cable I purchased is a Belkin "Pro Series". The package says that they also offer a "high performance" cable for 19" and larger monitors.