Have you tried the Mytheatre WDM "all pci cards" driver? The card may be too recent, I don't think Saar has done too much updating card drivers in the recent past. I can't recommend the DVBworld 2104 usb box, it is still in development as far as I can see. I've sent 4 or 5 emails during the month I've owned it and got a reply to one of them, haven't heard from them for quite a while now.
The box will do Usals with its own Dvbworld software but it is clunky, you have to preceed your longitude and lattitude setting with a minus (-) sign(there is no mention of this, I discoverd it by trying different things until it worked) , if you want to change satellites you have to go back into the configuration, find the satellite you want to go to and then click apply, then goto X.
The box does work with Mytheatre, but no Usals. It loads up the bda driver for one of the dvb-s versions, not the 2104, it will tune the channel, but takes a long time just to load Mytheatre and initialize the card, you can tell its not what it should be. There is new software on their website dated 2008-04-15. I tried it tonight but no difference, actually its worse here, now it displays an error on startup and crashes.
To be fair, I may have a defective box, maybe others work fine? Good luck with our Azureware card.