@wa9yoz
The graphics card in question is called a BlizzardVision, it uses the Permedia 2 chipset, has 8MB ram and 3D capabilities. Unfortunatley they don't come up for sale very often.
The other alternative is to use a Mediator 1200 with a Voodoo 3, though you'll need the A1200 in a tower case for this.
OS4 doesn't require a graphics card to run though some software that opens a Picasso 96 screen won't work.
