I have a Supermac STD-979o (Sony GDM-1950) that is listed as a 19" monitor (I think it is 21" with 19 viewable) and the only place I could put it without it crushing something was …
leosadv,
Specifically which Mac OS are you trying to use this card under, Mac OSX 10.3 or Mac OS 9.2.2? If it's 9.2.2, you could try and see if the card is compatible with the Or…