Does anybody know for good modification how to convert these monitors to work with PC standard?

I used schematic from http://laurent.granjon.free.fr/electronique/sgi2pc_gb.htm but it look like that some pihels missing and that picture is phase-shifted in some parts of the picture...

greg

this is a sync on green monitor. if you can get a sync converter it will run, but only at resolutions of 800x600 and higher. you also need a HD15 to 13w3 cable with SGI pinouts. several manurfacturers use 13w3 connectors, and all have different pin assignments. SGI sell the cable for $220 AUD! i tried getting one for a mitsubishi monitor i had. i ended up modifying it and placing BNC connectors on it instead.