@Castelle

Thanks Zetr0 for the offer of help but I am gonna get me a Blizzard 1230 or similar. Picking one up on ebay shouldn't be that difficult...
If you're going to look for a Blizzard 1230 on eBay, be prepeared to pay. The prices for such cards are quite steep today. An alternative to this is the great AmiBay site. There you can trade stuff with others interested in the Amiga. You can post a WTB advert there and maybe someone can help you out.