Help! lightgun+VGA=no joy

[kvasir]

Hello all. I have a light gun, and a 20" VGA monitor. I've tested the gun on regular NTSC displays, and it works fine, however when I hook up my VGA monitor, the light gun seems to have some problems shooting straight. It seems to "split" into 2 hits on the screen, to the left and the right of the center. I believe this has something to do with the changing of 15khz to 30khz that the external scandoubler does to the signal, making anything on a VGA monitor concerning games too stubborn to be run on dblntsc possible. Is there a simple fix I can do to the lightgun? perhaps there's a sync signal that needs to be doubled with soldered part from radio shack, or something I could do with the lens on the gun? Any help/ideas would be appreciated, as I don't have any clue on how the hell these light guns work. (info on the specific workings of the light gun would be appreciated, too)

[mongo]

Is there a simple fix I can do to the lightgun?

Nope.

A light gun will never work properly with a scan doubler.

All a light gun does is sends a signal to the computer when it detects the electron beam from the CRT passing by where you have it pointed to on the monitor. With a scan doubler attached, the electron beam is not going to be where the computer thinks it is, and you'll get a false reading.

[weirdami]

I wouldn't be surprised if you could calculate the correct position with software.

I also wouldn't be surprised if light guns don't work on LCD or plasma monitors, given what mongo said about how they work.

[kvasir]

That would explain why I get 2 "bullets" instead of one, though the game I'm using is a whdload install, I'm wondering if I could muck about with the timing signal itself with 2 dbn-9 connectors and a an oscillator?