If it's a latter card then yes you're wasting your time due to the surf lock. And by later I mean 5.3 and 5.4 cards. I'm not sure about 5.0 or 4.1 but in saying that I have a 4.1 and it's not happy in a phoenix and IR Server but is ok in my UltraPlus twin tuner.
The 5.4/5.3 etc are ok in single tuner boxes stand alone but try in twin and they don't work. surflock strikes again.