You have two options:
1. Setup NewCS server
Try setup a NewCS server on your system and use a MDApi newcamd plugin (wincsc, csc, acamd, emunation, etc) within your viewer software to connect to your NewCS instance. This will surely work (I use it for my DVB-T card, which has Conax encryption)
2. Try Acamd or Emunation
The MDapi plugins Acamd and Emunation has the abbility to directly access a Phoenix compatible reader. You may want to try these plugins and see if you can directly access your Conax card.
//Shalafi