figure out what chipset the video card has on it and from what ive seen on the web for info
2 video 7 isa boards use an ht-216 chipset
the 1024-i andthe vga 16
the vram II ergo used the ht -209/d
the win pro and warp 10 used s3/801/805 chipset how much memory do these cards have in them?? you might be stuck with 16 colours
if they are 256/ers maybe its time for an upgrade???